ICD-10-CM · Chapter 13 · M00-M99
M65 Synovitis and tenosynovitis
Excludes 1 (cannot be coded together)
- chronic crepitant synovitis of hand and wrist (M70.0-)
- current injury - see injury of ligament or tendon by body region
- soft tissue disorders related to use, overuse and pressure (M70.-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| M65..0 | Abscess of tendon sheath | No |
| M65..00 | Abscess of tendon sheath, unspecified site | Yes |
| M65..01 | Abscess of tendon sheath, shoulder | No |
| M65..011 | Abscess of tendon sheath, right shoulder | Yes |
| M65..012 | Abscess of tendon sheath, left shoulder | Yes |
| M65..019 | Abscess of tendon sheath, unspecified shoulder | Yes |
| M65..02 | Abscess of tendon sheath, upper arm | No |
| M65..021 | Abscess of tendon sheath, right upper arm | Yes |
| M65..022 | Abscess of tendon sheath, left upper arm | Yes |
| M65..029 | Abscess of tendon sheath, unspecified upper arm | Yes |
| M65..03 | Abscess of tendon sheath, forearm | No |
| M65..031 | Abscess of tendon sheath, right forearm | Yes |
| M65..032 | Abscess of tendon sheath, left forearm | Yes |
| M65..039 | Abscess of tendon sheath, unspecified forearm | Yes |
| M65..04 | Abscess of tendon sheath, hand | No |
| M65..041 | Abscess of tendon sheath, right hand | Yes |
| M65..042 | Abscess of tendon sheath, left hand | Yes |
| M65..049 | Abscess of tendon sheath, unspecified hand | Yes |
| M65..05 | Abscess of tendon sheath, thigh | No |
| M65..051 | Abscess of tendon sheath, right thigh | Yes |
| M65..052 | Abscess of tendon sheath, left thigh | Yes |
| M65..059 | Abscess of tendon sheath, unspecified thigh | Yes |
| M65..06 | Abscess of tendon sheath, lower leg | No |
| M65..061 | Abscess of tendon sheath, right lower leg | Yes |
| M65..062 | Abscess of tendon sheath, left lower leg | Yes |
| M65..069 | Abscess of tendon sheath, unspecified lower leg | Yes |
| M65..07 | Abscess of tendon sheath, ankle and foot | No |
| M65..071 | Abscess of tendon sheath, right ankle and foot | Yes |
| M65..072 | Abscess of tendon sheath, left ankle and foot | Yes |
| M65..079 | Abscess of tendon sheath, unspecified ankle and foot | Yes |
| M65..08 | Abscess of tendon sheath, other site | Yes |
| M65..1 | Other infective (teno)synovitis | No |
| M65..10 | Other infective (teno)synovitis, unspecified site | Yes |
| M65..11 | Other infective (teno)synovitis, shoulder | No |
| M65..111 | Other infective (teno)synovitis, right shoulder | Yes |
| M65..112 | Other infective (teno)synovitis, left shoulder | Yes |
| M65..119 | Other infective (teno)synovitis, unspecified shoulder | Yes |
| M65..12 | Other infective (teno)synovitis, elbow | No |
| M65..121 | Other infective (teno)synovitis, right elbow | Yes |
| M65..122 | Other infective (teno)synovitis, left elbow | Yes |
| M65..129 | Other infective (teno)synovitis, unspecified elbow | Yes |
| M65..13 | Other infective (teno)synovitis, wrist | No |
| M65..131 | Other infective (teno)synovitis, right wrist | Yes |
| M65..132 | Other infective (teno)synovitis, left wrist | Yes |
| M65..139 | Other infective (teno)synovitis, unspecified wrist | Yes |
| M65..14 | Other infective (teno)synovitis, hand | No |
| M65..141 | Other infective (teno)synovitis, right hand | Yes |
| M65..142 | Other infective (teno)synovitis, left hand | Yes |
| M65..149 | Other infective (teno)synovitis, unspecified hand | Yes |
| M65..15 | Other infective (teno)synovitis, hip | No |
| M65..151 | Other infective (teno)synovitis, right hip | Yes |
| M65..152 | Other infective (teno)synovitis, left hip | Yes |
| M65..159 | Other infective (teno)synovitis, unspecified hip | Yes |
| M65..16 | Other infective (teno)synovitis, knee | No |
| M65..161 | Other infective (teno)synovitis, right knee | Yes |
| M65..162 | Other infective (teno)synovitis, left knee | Yes |
| M65..169 | Other infective (teno)synovitis, unspecified knee | Yes |
| M65..17 | Other infective (teno)synovitis, ankle and foot | No |
| M65..171 | Other infective (teno)synovitis, right ankle and foot | Yes |
| M65..172 | Other infective (teno)synovitis, left ankle and foot | Yes |
| M65..179 | Other infective (teno)synovitis, unspecified ankle and foot | Yes |
| M65..18 | Other infective (teno)synovitis, other site | Yes |
| M65..19 | Other infective (teno)synovitis, multiple sites | Yes |
| M65..2 | Calcific tendinitis | No |
| M65..20 | Calcific tendinitis, unspecified site | Yes |
| M65..22 | Calcific tendinitis, upper arm | No |
| M65..221 | Calcific tendinitis, right upper arm | Yes |
| M65..222 | Calcific tendinitis, left upper arm | Yes |
| M65..229 | Calcific tendinitis, unspecified upper arm | Yes |
| M65..23 | Calcific tendinitis, forearm | No |
| M65..231 | Calcific tendinitis, right forearm | Yes |
| M65..232 | Calcific tendinitis, left forearm | Yes |
| M65..239 | Calcific tendinitis, unspecified forearm | Yes |
| M65..24 | Calcific tendinitis, hand | No |
| M65..241 | Calcific tendinitis, right hand | Yes |
| M65..242 | Calcific tendinitis, left hand | Yes |
| M65..249 | Calcific tendinitis, unspecified hand | Yes |
| M65..25 | Calcific tendinitis, thigh | No |
| M65..251 | Calcific tendinitis, right thigh | Yes |
| M65..252 | Calcific tendinitis, left thigh | Yes |
| M65..259 | Calcific tendinitis, unspecified thigh | Yes |
| M65..26 | Calcific tendinitis, lower leg | No |
| M65..261 | Calcific tendinitis, right lower leg | Yes |
| M65..262 | Calcific tendinitis, left lower leg | Yes |
| M65..269 | Calcific tendinitis, unspecified lower leg | Yes |
| M65..27 | Calcific tendinitis, ankle and foot | No |
| M65..271 | Calcific tendinitis, right ankle and foot | Yes |
| M65..272 | Calcific tendinitis, left ankle and foot | Yes |
| M65..279 | Calcific tendinitis, unspecified ankle and foot | Yes |
| M65..28 | Calcific tendinitis, other site | Yes |
| M65..29 | Calcific tendinitis, multiple sites | Yes |
| M65..3 | Trigger finger | No |
| M65..30 | Trigger finger, unspecified finger | Yes |
| M65..31 | Trigger thumb | No |
| M65..311 | Trigger thumb, right thumb | Yes |
| M65..312 | Trigger thumb, left thumb | Yes |
| M65..319 | Trigger thumb, unspecified thumb | Yes |
| M65..32 | Trigger finger, index finger | No |
| M65..321 | Trigger finger, right index finger | Yes |
| M65..322 | Trigger finger, left index finger | Yes |
| M65..329 | Trigger finger, unspecified index finger | Yes |
| M65..33 | Trigger finger, middle finger | No |
| M65..331 | Trigger finger, right middle finger | Yes |
| M65..332 | Trigger finger, left middle finger | Yes |
| M65..339 | Trigger finger, unspecified middle finger | Yes |
| M65..34 | Trigger finger, ring finger | No |
| M65..341 | Trigger finger, right ring finger | Yes |
| M65..342 | Trigger finger, left ring finger | Yes |
| M65..349 | Trigger finger, unspecified ring finger | Yes |
| M65..35 | Trigger finger, little finger | No |
| M65..351 | Trigger finger, right little finger | Yes |
| M65..352 | Trigger finger, left little finger | Yes |
| M65..359 | Trigger finger, unspecified little finger | Yes |
| M65..4 | Radial styloid tenosynovitis [de Quervain] | Yes |
| M65..8 | Other synovitis and tenosynovitis | No |
| M65..80 | Other synovitis and tenosynovitis, unspecified site | Yes |
| M65..81 | Other synovitis and tenosynovitis, shoulder | No |
| M65..811 | Other synovitis and tenosynovitis, right shoulder | Yes |
| M65..812 | Other synovitis and tenosynovitis, left shoulder | Yes |
| M65..819 | Other synovitis and tenosynovitis, unspecified shoulder | Yes |
| M65..82 | Other synovitis and tenosynovitis, upper arm | No |
| M65..821 | Other synovitis and tenosynovitis, right upper arm | Yes |
| M65..822 | Other synovitis and tenosynovitis, left upper arm | Yes |
| M65..829 | Other synovitis and tenosynovitis, unspecified upper arm | Yes |
| M65..83 | Other synovitis and tenosynovitis, forearm | No |
| M65..831 | Other synovitis and tenosynovitis, right forearm | Yes |
| M65..832 | Other synovitis and tenosynovitis, left forearm | Yes |
| M65..839 | Other synovitis and tenosynovitis, unspecified forearm | Yes |
| M65..84 | Other synovitis and tenosynovitis, hand | No |
| M65..841 | Other synovitis and tenosynovitis, right hand | Yes |
| M65..842 | Other synovitis and tenosynovitis, left hand | Yes |
| M65..849 | Other synovitis and tenosynovitis, unspecified hand | Yes |
| M65..85 | Other synovitis and tenosynovitis, thigh | No |
| M65..851 | Other synovitis and tenosynovitis, right thigh | Yes |
| M65..852 | Other synovitis and tenosynovitis, left thigh | Yes |
| M65..859 | Other synovitis and tenosynovitis, unspecified thigh | Yes |
| M65..86 | Other synovitis and tenosynovitis, lower leg | No |
| M65..861 | Other synovitis and tenosynovitis, right lower leg | Yes |
| M65..862 | Other synovitis and tenosynovitis, left lower leg | Yes |
| M65..869 | Other synovitis and tenosynovitis, unspecified lower leg | Yes |
| M65..87 | Other synovitis and tenosynovitis, ankle and foot | No |
| M65..871 | Other synovitis and tenosynovitis, right ankle and foot | Yes |
| M65..872 | Other synovitis and tenosynovitis, left ankle and foot | Yes |
| M65..879 | Other synovitis and tenosynovitis, unspecified ankle and foot | Yes |
| M65..88 | Other synovitis and tenosynovitis, other site | Yes |
| M65..89 | Other synovitis and tenosynovitis, multiple sites | Yes |
| M65..9 | Synovitis and tenosynovitis, unspecified | No |
| M65..90 | Unspecified synovitis and tenosynovitis, unspecified site | Yes |
| M65..91 | Unspecified synovitis and tenosynovitis, shoulder | No |
| M65..911 | Unspecified synovitis and tenosynovitis, right shoulder | Yes |
| M65..912 | Unspecified synovitis and tenosynovitis, left shoulder | Yes |
| M65..919 | Unspecified synovitis and tenosynovitis, unspecified shoulder | Yes |
| M65..92 | Unspecified synovitis and tenosynovitis, upper arm | No |
| M65..921 | Unspecified synovitis and tenosynovitis, right upper arm | Yes |
| M65..922 | Unspecified synovitis and tenosynovitis, left upper arm | Yes |
| M65..929 | Unspecified synovitis and tenosynovitis, unspecified upper arm | Yes |
| M65..93 | Unspecified synovitis and tenosynovitis, forearm | No |
| M65..931 | Unspecified synovitis and tenosynovitis, right forearm | Yes |
| M65..932 | Unspecified synovitis and tenosynovitis, left forearm | Yes |
| M65..939 | Unspecified synovitis and tenosynovitis, unspecified forearm | Yes |
| M65..94 | Unspecified synovitis and tenosynovitis, hand | No |
| M65..941 | Unspecified synovitis and tenosynovitis, right hand | Yes |
| M65..942 | Unspecified synovitis and tenosynovitis, left hand | Yes |
| M65..949 | Unspecified synovitis and tenosynovitis, unspecified hand | Yes |
| M65..95 | Unspecified synovitis and tenosynovitis, thigh | No |
| M65..951 | Unspecified synovitis and tenosynovitis, right thigh | Yes |
| M65..952 | Unspecified synovitis and tenosynovitis, left thigh | Yes |
| M65..959 | Unspecified synovitis and tenosynovitis, unspecified thigh | Yes |
| M65..96 | Unspecified synovitis and tenosynovitis, lower leg | No |
| M65..961 | Unspecified synovitis and tenosynovitis, right lower leg | Yes |
| M65..962 | Unspecified synovitis and tenosynovitis, left lower leg | Yes |
| M65..969 | Unspecified synovitis and tenosynovitis, unspecified lower leg | Yes |
| M65..97 | Unspecified synovitis and tenosynovitis, ankle and foot | No |
| M65..971 | Unspecified synovitis and tenosynovitis, right ankle and foot | Yes |
| M65..972 | Unspecified synovitis and tenosynovitis, left ankle and foot | Yes |
| M65..979 | Unspecified synovitis and tenosynovitis, unspecified ankle and foot | Yes |
| M65..98 | Unspecified synovitis and tenosynovitis, other site | Yes |
| M65..99 | Unspecified synovitis and tenosynovitis, multiple sites | Yes |
Last reviewed: September 2026