ICD-10-CM · Chapter 19 · S00-T88
S66 Injury of muscle, fascia and tendon at wrist and hand level
Excludes 2 (not included here)
- sprain of joints and ligaments of wrist and hand (S63.-)
Code Also
- any associated open wound (S61.-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| S66..0 | Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..00 | Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..001 | Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..002 | Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..009 | Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..01 | Strain of long flexor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..011 | Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..012 | Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..019 | Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..02 | Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..021 | Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..022 | Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..029 | Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..09 | Other specified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..091 | Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..092 | Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..099 | Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..1 | Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..10 | Unspecified injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..100 | Unspecified injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..101 | Unspecified injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..102 | Unspecified injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..103 | Unspecified injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..104 | Unspecified injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..105 | Unspecified injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..106 | Unspecified injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..107 | Unspecified injury of flexor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..108 | Unspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..109 | Unspecified injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..11 | Strain of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..110 | Strain of flexor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..111 | Strain of flexor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..112 | Strain of flexor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..113 | Strain of flexor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..114 | Strain of flexor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..115 | Strain of flexor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..116 | Strain of flexor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..117 | Strain of flexor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..118 | Strain of flexor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..119 | Strain of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..12 | Laceration of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..120 | Laceration of flexor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..121 | Laceration of flexor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..122 | Laceration of flexor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..123 | Laceration of flexor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..124 | Laceration of flexor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..125 | Laceration of flexor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..126 | Laceration of flexor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..127 | Laceration of flexor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..128 | Laceration of flexor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..129 | Laceration of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..19 | Other injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..190 | Other injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..191 | Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..192 | Other injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..193 | Other injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..194 | Other injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..195 | Other injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..196 | Other injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..197 | Other injury of flexor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..198 | Other injury of flexor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..199 | Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..2 | Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..20 | Unspecified injury of extensor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..201 | Unspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..202 | Unspecified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..209 | Unspecified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..21 | Strain of extensor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..211 | Strain of extensor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..212 | Strain of extensor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..219 | Strain of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..22 | Laceration of extensor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..221 | Laceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..222 | Laceration of extensor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..229 | Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..29 | Other specified injury of extensor muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..291 | Other specified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..292 | Other specified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..299 | Other specified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..3 | Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..30 | Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..300 | Unspecified injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..301 | Unspecified injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..302 | Unspecified injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..303 | Unspecified injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..304 | Unspecified injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..305 | Unspecified injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..306 | Unspecified injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..307 | Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..308 | Unspecified injury of extensor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..309 | Unspecified injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..31 | Strain of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..310 | Strain of extensor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..311 | Strain of extensor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..312 | Strain of extensor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..313 | Strain of extensor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..314 | Strain of extensor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..315 | Strain of extensor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..316 | Strain of extensor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..317 | Strain of extensor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..318 | Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..319 | Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..32 | Laceration of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..320 | Laceration of extensor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..321 | Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..322 | Laceration of extensor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..323 | Laceration of extensor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..324 | Laceration of extensor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..325 | Laceration of extensor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..326 | Laceration of extensor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..327 | Laceration of extensor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..328 | Laceration of extensor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..329 | Laceration of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..39 | Other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..390 | Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..391 | Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..392 | Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..393 | Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..394 | Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..395 | Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..396 | Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..397 | Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..398 | Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..399 | Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..4 | Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..40 | Unspecified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..401 | Unspecified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..402 | Unspecified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..409 | Unspecified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..41 | Strain of intrinsic muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..411 | Strain of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..412 | Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..419 | Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..42 | Laceration of intrinsic muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..421 | Laceration of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..422 | Laceration of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..429 | Laceration of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..49 | Other specified injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level | No |
| S66..491 | Other specified injury of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level | No |
| S66..492 | Other specified injury of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level | No |
| S66..499 | Other specified injury of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level | No |
| S66..5 | Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..50 | Unspecified injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..500 | Unspecified injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..501 | Unspecified injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..502 | Unspecified injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..503 | Unspecified injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..504 | Unspecified injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..505 | Unspecified injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..506 | Unspecified injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..507 | Unspecified injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..508 | Unspecified injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..509 | Unspecified injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..51 | Strain of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..510 | Strain of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..511 | Strain of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..512 | Strain of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..513 | Strain of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..514 | Strain of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..515 | Strain of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..516 | Strain of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..517 | Strain of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..518 | Strain of intrinsic muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..519 | Strain of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..52 | Laceration of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..520 | Laceration of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..521 | Laceration of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..522 | Laceration of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..523 | Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..524 | Laceration of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..525 | Laceration of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..526 | Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..527 | Laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..528 | Laceration of intrinsic muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..529 | Laceration of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..59 | Other injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level | No |
| S66..590 | Other injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level | No |
| S66..591 | Other injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level | No |
| S66..592 | Other injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level | No |
| S66..593 | Other injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level | No |
| S66..594 | Other injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level | No |
| S66..595 | Other injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level | No |
| S66..596 | Other injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level | No |
| S66..597 | Other injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level | No |
| S66..598 | Other injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level | No |
| S66..599 | Other injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level | No |
| S66..8 | Injury of other specified muscles, fascia and tendons at wrist and hand level | No |
| S66..80 | Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level | No |
| S66..801 | Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, right hand | No |
| S66..802 | Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, left hand | No |
| S66..809 | Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand | No |
| S66..81 | Strain of other specified muscles, fascia and tendons at wrist and hand level | No |
| S66..811 | Strain of other specified muscles, fascia and tendons at wrist and hand level, right hand | No |
| S66..812 | Strain of other specified muscles, fascia and tendons at wrist and hand level, left hand | No |
| S66..819 | Strain of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand | No |
| S66..82 | Laceration of other specified muscles, fascia and tendons at wrist and hand level | No |
| S66..821 | Laceration of other specified muscles, fascia and tendons at wrist and hand level, right hand | No |
| S66..822 | Laceration of other specified muscles, fascia and tendons at wrist and hand level, left hand | No |
| S66..829 | Laceration of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand | No |
| S66..89 | Other injury of other specified muscles, fascia and tendons at wrist and hand level | No |
| S66..891 | Other injury of other specified muscles, fascia and tendons at wrist and hand level, right hand | No |
| S66..892 | Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand | No |
| S66..899 | Other injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand | No |
| S66..9 | Injury of unspecified muscle, fascia and tendon at wrist and hand level | No |
| S66..90 | Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level | No |
| S66..901 | Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand | No |
| S66..902 | Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand | No |
| S66..909 | Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand | No |
| S66..91 | Strain of unspecified muscle, fascia and tendon at wrist and hand level | No |
| S66..911 | Strain of unspecified muscle, fascia and tendon at wrist and hand level, right hand | No |
| S66..912 | Strain of unspecified muscle, fascia and tendon at wrist and hand level, left hand | No |
| S66..919 | Strain of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand | No |
| S66..92 | Laceration of unspecified muscle, fascia and tendon at wrist and hand level | No |
| S66..921 | Laceration of unspecified muscle, fascia and tendon at wrist and hand level, right hand | No |
| S66..922 | Laceration of unspecified muscle, fascia and tendon at wrist and hand level, left hand | No |
| S66..929 | Laceration of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand | No |
| S66..99 | Other injury of unspecified muscle, fascia and tendon at wrist and hand level | No |
| S66..991 | Other injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand | No |
| S66..992 | Other injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand | No |
| S66..999 | Other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand | No |
Last reviewed: September 2026