ICD-10-CM · Chapter 12 · L00-L99
L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified
Includes
- chronic ulcer of skin of lower limb NOS
- non-healing ulcer of skin
- non-infected sinus of skin
- trophic ulcer NOS
- tropical ulcer NOS
- ulcer of skin of lower limb NOS
Excludes 2 (not included here)
- pressure ulcer (pressure area) (L89.-)
- skin infections (L00-L08)
- specific infections classified to A00-B99
Code First
- any associated underlying condition, such as:
- any associated gangrene (I96)
- atherosclerosis of the lower extremities (I70.23-, I70.24-, I70.33-, I70.34-, I70.43-, I70.44-, I70.53-, I70.54-, I70.63-, I70.64-, I70.73-, I70.74-)
- chronic venous hypertension (I87.31-, I87.33-)
- diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
- postphlebitic syndrome (I87.01-, I87.03-)
- postthrombotic syndrome (I87.01-, I87.03-)
- varicose ulcer (I83.0-, I83.2-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| L97..1 | Non-pressure chronic ulcer of thigh | No |
| L97..10 | Non-pressure chronic ulcer of unspecified thigh | No |
| L97..101 | Non-pressure chronic ulcer of unspecified thigh limited to breakdown of skin | Yes |
| L97..102 | Non-pressure chronic ulcer of unspecified thigh with fat layer exposed | Yes |
| L97..103 | Non-pressure chronic ulcer of unspecified thigh with necrosis of muscle | Yes |
| L97..104 | Non-pressure chronic ulcer of unspecified thigh with necrosis of bone | Yes |
| L97..105 | Non-pressure chronic ulcer of unspecified thigh with muscle involvement without evidence of necrosis | Yes |
| L97..106 | Non-pressure chronic ulcer of unspecified thigh with bone involvement without evidence of necrosis | Yes |
| L97..108 | Non-pressure chronic ulcer of unspecified thigh with other specified severity | Yes |
| L97..109 | Non-pressure chronic ulcer of unspecified thigh with unspecified severity | Yes |
| L97..11 | Non-pressure chronic ulcer of right thigh | No |
| L97..111 | Non-pressure chronic ulcer of right thigh limited to breakdown of skin | Yes |
| L97..112 | Non-pressure chronic ulcer of right thigh with fat layer exposed | Yes |
| L97..113 | Non-pressure chronic ulcer of right thigh with necrosis of muscle | Yes |
| L97..114 | Non-pressure chronic ulcer of right thigh with necrosis of bone | Yes |
| L97..115 | Non-pressure chronic ulcer of right thigh with muscle involvement without evidence of necrosis | Yes |
| L97..116 | Non-pressure chronic ulcer of right thigh with bone involvement without evidence of necrosis | Yes |
| L97..118 | Non-pressure chronic ulcer of right thigh with other specified severity | Yes |
| L97..119 | Non-pressure chronic ulcer of right thigh with unspecified severity | Yes |
| L97..12 | Non-pressure chronic ulcer of left thigh | No |
| L97..121 | Non-pressure chronic ulcer of left thigh limited to breakdown of skin | Yes |
| L97..122 | Non-pressure chronic ulcer of left thigh with fat layer exposed | Yes |
| L97..123 | Non-pressure chronic ulcer of left thigh with necrosis of muscle | Yes |
| L97..124 | Non-pressure chronic ulcer of left thigh with necrosis of bone | Yes |
| L97..125 | Non-pressure chronic ulcer of left thigh with muscle involvement without evidence of necrosis | Yes |
| L97..126 | Non-pressure chronic ulcer of left thigh with bone involvement without evidence of necrosis | Yes |
| L97..128 | Non-pressure chronic ulcer of left thigh with other specified severity | Yes |
| L97..129 | Non-pressure chronic ulcer of left thigh with unspecified severity | Yes |
| L97..2 | Non-pressure chronic ulcer of calf | No |
| L97..20 | Non-pressure chronic ulcer of unspecified calf | No |
| L97..201 | Non-pressure chronic ulcer of unspecified calf limited to breakdown of skin | Yes |
| L97..202 | Non-pressure chronic ulcer of unspecified calf with fat layer exposed | Yes |
| L97..203 | Non-pressure chronic ulcer of unspecified calf with necrosis of muscle | Yes |
| L97..204 | Non-pressure chronic ulcer of unspecified calf with necrosis of bone | Yes |
| L97..205 | Non-pressure chronic ulcer of unspecified calf with muscle involvement without evidence of necrosis | Yes |
| L97..206 | Non-pressure chronic ulcer of unspecified calf with bone involvement without evidence of necrosis | Yes |
| L97..208 | Non-pressure chronic ulcer of unspecified calf with other specified severity | Yes |
| L97..209 | Non-pressure chronic ulcer of unspecified calf with unspecified severity | Yes |
| L97..21 | Non-pressure chronic ulcer of right calf | No |
| L97..211 | Non-pressure chronic ulcer of right calf limited to breakdown of skin | Yes |
| L97..212 | Non-pressure chronic ulcer of right calf with fat layer exposed | Yes |
| L97..213 | Non-pressure chronic ulcer of right calf with necrosis of muscle | Yes |
| L97..214 | Non-pressure chronic ulcer of right calf with necrosis of bone | Yes |
| L97..215 | Non-pressure chronic ulcer of right calf with muscle involvement without evidence of necrosis | Yes |
| L97..216 | Non-pressure chronic ulcer of right calf with bone involvement without evidence of necrosis | Yes |
| L97..218 | Non-pressure chronic ulcer of right calf with other specified severity | Yes |
| L97..219 | Non-pressure chronic ulcer of right calf with unspecified severity | Yes |
| L97..22 | Non-pressure chronic ulcer of left calf | No |
| L97..221 | Non-pressure chronic ulcer of left calf limited to breakdown of skin | Yes |
| L97..222 | Non-pressure chronic ulcer of left calf with fat layer exposed | Yes |
| L97..223 | Non-pressure chronic ulcer of left calf with necrosis of muscle | Yes |
| L97..224 | Non-pressure chronic ulcer of left calf with necrosis of bone | Yes |
| L97..225 | Non-pressure chronic ulcer of left calf with muscle involvement without evidence of necrosis | Yes |
| L97..226 | Non-pressure chronic ulcer of left calf with bone involvement without evidence of necrosis | Yes |
| L97..228 | Non-pressure chronic ulcer of left calf with other specified severity | Yes |
| L97..229 | Non-pressure chronic ulcer of left calf with unspecified severity | Yes |
| L97..3 | Non-pressure chronic ulcer of ankle | No |
| L97..30 | Non-pressure chronic ulcer of unspecified ankle | No |
| L97..301 | Non-pressure chronic ulcer of unspecified ankle limited to breakdown of skin | Yes |
| L97..302 | Non-pressure chronic ulcer of unspecified ankle with fat layer exposed | Yes |
| L97..303 | Non-pressure chronic ulcer of unspecified ankle with necrosis of muscle | Yes |
| L97..304 | Non-pressure chronic ulcer of unspecified ankle with necrosis of bone | Yes |
| L97..305 | Non-pressure chronic ulcer of unspecified ankle with muscle involvement without evidence of necrosis | Yes |
| L97..306 | Non-pressure chronic ulcer of unspecified ankle with bone involvement without evidence of necrosis | Yes |
| L97..308 | Non-pressure chronic ulcer of unspecified ankle with other specified severity | Yes |
| L97..309 | Non-pressure chronic ulcer of unspecified ankle with unspecified severity | Yes |
| L97..31 | Non-pressure chronic ulcer of right ankle | No |
| L97..311 | Non-pressure chronic ulcer of right ankle limited to breakdown of skin | Yes |
| L97..312 | Non-pressure chronic ulcer of right ankle with fat layer exposed | Yes |
| L97..313 | Non-pressure chronic ulcer of right ankle with necrosis of muscle | Yes |
| L97..314 | Non-pressure chronic ulcer of right ankle with necrosis of bone | Yes |
| L97..315 | Non-pressure chronic ulcer of right ankle with muscle involvement without evidence of necrosis | Yes |
| L97..316 | Non-pressure chronic ulcer of right ankle with bone involvement without evidence of necrosis | Yes |
| L97..318 | Non-pressure chronic ulcer of right ankle with other specified severity | Yes |
| L97..319 | Non-pressure chronic ulcer of right ankle with unspecified severity | Yes |
| L97..32 | Non-pressure chronic ulcer of left ankle | No |
| L97..321 | Non-pressure chronic ulcer of left ankle limited to breakdown of skin | Yes |
| L97..322 | Non-pressure chronic ulcer of left ankle with fat layer exposed | Yes |
| L97..323 | Non-pressure chronic ulcer of left ankle with necrosis of muscle | Yes |
| L97..324 | Non-pressure chronic ulcer of left ankle with necrosis of bone | Yes |
| L97..325 | Non-pressure chronic ulcer of left ankle with muscle involvement without evidence of necrosis | Yes |
| L97..326 | Non-pressure chronic ulcer of left ankle with bone involvement without evidence of necrosis | Yes |
| L97..328 | Non-pressure chronic ulcer of left ankle with other specified severity | Yes |
| L97..329 | Non-pressure chronic ulcer of left ankle with unspecified severity | Yes |
| L97..4 | Non-pressure chronic ulcer of heel and midfoot | No |
| L97..40 | Non-pressure chronic ulcer of unspecified heel and midfoot | No |
| L97..401 | Non-pressure chronic ulcer of unspecified heel and midfoot limited to breakdown of skin | Yes |
| L97..402 | Non-pressure chronic ulcer of unspecified heel and midfoot with fat layer exposed | Yes |
| L97..403 | Non-pressure chronic ulcer of unspecified heel and midfoot with necrosis of muscle | Yes |
| L97..404 | Non-pressure chronic ulcer of unspecified heel and midfoot with necrosis of bone | Yes |
| L97..405 | Non-pressure chronic ulcer of unspecified heel and midfoot with muscle involvement without evidence of necrosis | Yes |
| L97..406 | Non-pressure chronic ulcer of unspecified heel and midfoot with bone involvement without evidence of necrosis | Yes |
| L97..408 | Non-pressure chronic ulcer of unspecified heel and midfoot with other specified severity | Yes |
| L97..409 | Non-pressure chronic ulcer of unspecified heel and midfoot with unspecified severity | Yes |
| L97..41 | Non-pressure chronic ulcer of right heel and midfoot | No |
| L97..411 | Non-pressure chronic ulcer of right heel and midfoot limited to breakdown of skin | Yes |
| L97..412 | Non-pressure chronic ulcer of right heel and midfoot with fat layer exposed | Yes |
| L97..413 | Non-pressure chronic ulcer of right heel and midfoot with necrosis of muscle | Yes |
| L97..414 | Non-pressure chronic ulcer of right heel and midfoot with necrosis of bone | Yes |
| L97..415 | Non-pressure chronic ulcer of right heel and midfoot with muscle involvement without evidence of necrosis | Yes |
| L97..416 | Non-pressure chronic ulcer of right heel and midfoot with bone involvement without evidence of necrosis | Yes |
| L97..418 | Non-pressure chronic ulcer of right heel and midfoot with other specified severity | Yes |
| L97..419 | Non-pressure chronic ulcer of right heel and midfoot with unspecified severity | Yes |
| L97..42 | Non-pressure chronic ulcer of left heel and midfoot | No |
| L97..421 | Non-pressure chronic ulcer of left heel and midfoot limited to breakdown of skin | Yes |
| L97..422 | Non-pressure chronic ulcer of left heel and midfoot with fat layer exposed | Yes |
| L97..423 | Non-pressure chronic ulcer of left heel and midfoot with necrosis of muscle | Yes |
| L97..424 | Non-pressure chronic ulcer of left heel and midfoot with necrosis of bone | Yes |
| L97..425 | Non-pressure chronic ulcer of left heel and midfoot with muscle involvement without evidence of necrosis | Yes |
| L97..426 | Non-pressure chronic ulcer of left heel and midfoot with bone involvement without evidence of necrosis | Yes |
| L97..428 | Non-pressure chronic ulcer of left heel and midfoot with other specified severity | Yes |
| L97..429 | Non-pressure chronic ulcer of left heel and midfoot with unspecified severity | Yes |
| L97..5 | Non-pressure chronic ulcer of other part of foot | No |
| L97..50 | Non-pressure chronic ulcer of other part of unspecified foot | No |
| L97..501 | Non-pressure chronic ulcer of other part of unspecified foot limited to breakdown of skin | Yes |
| L97..502 | Non-pressure chronic ulcer of other part of unspecified foot with fat layer exposed | Yes |
| L97..503 | Non-pressure chronic ulcer of other part of unspecified foot with necrosis of muscle | Yes |
| L97..504 | Non-pressure chronic ulcer of other part of unspecified foot with necrosis of bone | Yes |
| L97..505 | Non-pressure chronic ulcer of other part of unspecified foot with muscle involvement without evidence of necrosis | Yes |
| L97..506 | Non-pressure chronic ulcer of other part of unspecified foot with bone involvement without evidence of necrosis | Yes |
| L97..508 | Non-pressure chronic ulcer of other part of unspecified foot with other specified severity | Yes |
| L97..509 | Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity | Yes |
| L97..51 | Non-pressure chronic ulcer of other part of right foot | No |
| L97..511 | Non-pressure chronic ulcer of other part of right foot limited to breakdown of skin | Yes |
| L97..512 | Non-pressure chronic ulcer of other part of right foot with fat layer exposed | Yes |
| L97..513 | Non-pressure chronic ulcer of other part of right foot with necrosis of muscle | Yes |
| L97..514 | Non-pressure chronic ulcer of other part of right foot with necrosis of bone | Yes |
| L97..515 | Non-pressure chronic ulcer of other part of right foot with muscle involvement without evidence of necrosis | Yes |
| L97..516 | Non-pressure chronic ulcer of other part of right foot with bone involvement without evidence of necrosis | Yes |
| L97..518 | Non-pressure chronic ulcer of other part of right foot with other specified severity | Yes |
| L97..519 | Non-pressure chronic ulcer of other part of right foot with unspecified severity | Yes |
| L97..52 | Non-pressure chronic ulcer of other part of left foot | No |
| L97..521 | Non-pressure chronic ulcer of other part of left foot limited to breakdown of skin | Yes |
| L97..522 | Non-pressure chronic ulcer of other part of left foot with fat layer exposed | Yes |
| L97..523 | Non-pressure chronic ulcer of other part of left foot with necrosis of muscle | Yes |
| L97..524 | Non-pressure chronic ulcer of other part of left foot with necrosis of bone | Yes |
| L97..525 | Non-pressure chronic ulcer of other part of left foot with muscle involvement without evidence of necrosis | Yes |
| L97..526 | Non-pressure chronic ulcer of other part of left foot with bone involvement without evidence of necrosis | Yes |
| L97..528 | Non-pressure chronic ulcer of other part of left foot with other specified severity | Yes |
| L97..529 | Non-pressure chronic ulcer of other part of left foot with unspecified severity | Yes |
| L97..8 | Non-pressure chronic ulcer of other part of lower leg | No |
| L97..80 | Non-pressure chronic ulcer of other part of unspecified lower leg | No |
| L97..801 | Non-pressure chronic ulcer of other part of unspecified lower leg limited to breakdown of skin | Yes |
| L97..802 | Non-pressure chronic ulcer of other part of unspecified lower leg with fat layer exposed | Yes |
| L97..803 | Non-pressure chronic ulcer of other part of unspecified lower leg with necrosis of muscle | Yes |
| L97..804 | Non-pressure chronic ulcer of other part of unspecified lower leg with necrosis of bone | Yes |
| L97..805 | Non-pressure chronic ulcer of other part of unspecified lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..806 | Non-pressure chronic ulcer of other part of unspecified lower leg with bone involvement without evidence of necrosis | Yes |
| L97..808 | Non-pressure chronic ulcer of other part of unspecified lower leg with other specified severity | Yes |
| L97..809 | Non-pressure chronic ulcer of other part of unspecified lower leg with unspecified severity | Yes |
| L97..81 | Non-pressure chronic ulcer of other part of right lower leg | No |
| L97..811 | Non-pressure chronic ulcer of other part of right lower leg limited to breakdown of skin | Yes |
| L97..812 | Non-pressure chronic ulcer of other part of right lower leg with fat layer exposed | Yes |
| L97..813 | Non-pressure chronic ulcer of other part of right lower leg with necrosis of muscle | Yes |
| L97..814 | Non-pressure chronic ulcer of other part of right lower leg with necrosis of bone | Yes |
| L97..815 | Non-pressure chronic ulcer of other part of right lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..816 | Non-pressure chronic ulcer of other part of right lower leg with bone involvement without evidence of necrosis | Yes |
| L97..818 | Non-pressure chronic ulcer of other part of right lower leg with other specified severity | Yes |
| L97..819 | Non-pressure chronic ulcer of other part of right lower leg with unspecified severity | Yes |
| L97..82 | Non-pressure chronic ulcer of other part of left lower leg | No |
| L97..821 | Non-pressure chronic ulcer of other part of left lower leg limited to breakdown of skin | Yes |
| L97..822 | Non-pressure chronic ulcer of other part of left lower leg with fat layer exposed | Yes |
| L97..823 | Non-pressure chronic ulcer of other part of left lower leg with necrosis of muscle | Yes |
| L97..824 | Non-pressure chronic ulcer of other part of left lower leg with necrosis of bone | Yes |
| L97..825 | Non-pressure chronic ulcer of other part of left lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..826 | Non-pressure chronic ulcer of other part of left lower leg with bone involvement without evidence of necrosis | Yes |
| L97..828 | Non-pressure chronic ulcer of other part of left lower leg with other specified severity | Yes |
| L97..829 | Non-pressure chronic ulcer of other part of left lower leg with unspecified severity | Yes |
| L97..9 | Non-pressure chronic ulcer of unspecified part of lower leg | No |
| L97..90 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg | No |
| L97..901 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg limited to breakdown of skin | Yes |
| L97..902 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with fat layer exposed | Yes |
| L97..903 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of muscle | Yes |
| L97..904 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with necrosis of bone | Yes |
| L97..905 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..906 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with bone involvement without evidence of necrosis | Yes |
| L97..908 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with other specified severity | Yes |
| L97..909 | Non-pressure chronic ulcer of unspecified part of unspecified lower leg with unspecified severity | Yes |
| L97..91 | Non-pressure chronic ulcer of unspecified part of right lower leg | No |
| L97..911 | Non-pressure chronic ulcer of unspecified part of right lower leg limited to breakdown of skin | Yes |
| L97..912 | Non-pressure chronic ulcer of unspecified part of right lower leg with fat layer exposed | Yes |
| L97..913 | Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of muscle | Yes |
| L97..914 | Non-pressure chronic ulcer of unspecified part of right lower leg with necrosis of bone | Yes |
| L97..915 | Non-pressure chronic ulcer of unspecified part of right lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..916 | Non-pressure chronic ulcer of unspecified part of right lower leg with bone involvement without evidence of necrosis | Yes |
| L97..918 | Non-pressure chronic ulcer of unspecified part of right lower leg with other specified severity | Yes |
| L97..919 | Non-pressure chronic ulcer of unspecified part of right lower leg with unspecified severity | Yes |
| L97..92 | Non-pressure chronic ulcer of unspecified part of left lower leg | No |
| L97..921 | Non-pressure chronic ulcer of unspecified part of left lower leg limited to breakdown of skin | Yes |
| L97..922 | Non-pressure chronic ulcer of unspecified part of left lower leg with fat layer exposed | Yes |
| L97..923 | Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of muscle | Yes |
| L97..924 | Non-pressure chronic ulcer of unspecified part of left lower leg with necrosis of bone | Yes |
| L97..925 | Non-pressure chronic ulcer of unspecified part of left lower leg with muscle involvement without evidence of necrosis | Yes |
| L97..926 | Non-pressure chronic ulcer of unspecified part of left lower leg with bone involvement without evidence of necrosis | Yes |
| L97..928 | Non-pressure chronic ulcer of unspecified part of left lower leg with other specified severity | Yes |
| L97..929 | Non-pressure chronic ulcer of unspecified part of left lower leg with unspecified severity | Yes |
Last reviewed: September 2026