ICD-10-CM 2027 diagnosis code
L97.1Non-pressure chronic ulcer of thigh
L97.1 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About L97.1
L97.1 is the ICD-10-CM diagnosis code for Non-pressure chronic ulcer of thigh. It belongs to category L97 (Non-pressure chronic ulcer of lower limb, not elsewhere classified), block L80-L99 (other disorders of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within L97 (Non-pressure chronic ulcer of lower limb, not elsewhere classified), L97.1 is specifically for Non-pressure chronic ulcer of thigh. Related codes cover calf (L97.2), ankle (L97.3), heel and midfoot (L97.4), other part of foot (L97.5), other part of lower leg (L97.8) and unspecified part of lower leg (L97.9).
To report this condition, pick the subcode that matches the documentation: L97.10 (thigh), L97.11 (thigh) and L97.12 (thigh).
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) and 3 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under L97.1
- L97.10Non-pressure chronic ulcer of unspecified thigh
- L97.101Non-pressure chronic ulcer of unspecified thigh limited to breakdown of skinBillable
- L97.102Non-pressure chronic ulcer of unspecified thigh with fat layer exposedBillable
- L97.103Non-pressure chronic ulcer of unspecified thigh with necrosis of muscleBillable
- L97.104Non-pressure chronic ulcer of unspecified thigh with necrosis of boneBillable
- L97.105Non-pressure chronic ulcer of unspecified thigh with muscle involvement without evidence of necrosisBillable
- L97.106Non-pressure chronic ulcer of unspecified thigh with bone involvement without evidence of necrosisBillable
- L97.108Non-pressure chronic ulcer of unspecified thigh with other specified severityBillable
- L97.109Non-pressure chronic ulcer of unspecified thigh with unspecified severityBillable
- L97.11Non-pressure chronic ulcer of right thigh
- L97.111Non-pressure chronic ulcer of right thigh limited to breakdown of skinBillable
- L97.112Non-pressure chronic ulcer of right thigh with fat layer exposedBillable
- L97.113Non-pressure chronic ulcer of right thigh with necrosis of muscleBillable
- L97.114Non-pressure chronic ulcer of right thigh with necrosis of boneBillable
- L97.115Non-pressure chronic ulcer of right thigh with muscle involvement without evidence of necrosisBillable
- L97.116Non-pressure chronic ulcer of right thigh with bone involvement without evidence of necrosisBillable
- L97.118Non-pressure chronic ulcer of right thigh with other specified severityBillable
- L97.119Non-pressure chronic ulcer of right thigh with unspecified severityBillable
- L97.12Non-pressure chronic ulcer of left thigh
- L97.121Non-pressure chronic ulcer of left thigh limited to breakdown of skinBillable
- L97.122Non-pressure chronic ulcer of left thigh with fat layer exposedBillable
- L97.123Non-pressure chronic ulcer of left thigh with necrosis of muscleBillable
- L97.124Non-pressure chronic ulcer of left thigh with necrosis of boneBillable
- L97.125Non-pressure chronic ulcer of left thigh with muscle involvement without evidence of necrosisBillable
- L97.126Non-pressure chronic ulcer of left thigh with bone involvement without evidence of necrosisBillable
- L97.128Non-pressure chronic ulcer of left thigh with other specified severityBillable
- L97.129Non-pressure chronic ulcer of left thigh with unspecified severityBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to L97.1.
› From L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified
- 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
- 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-)
Broader instructions also apply from Chapter 12: Diseases of the skin and subcutaneous tissue.
Codes whose notes reference L97.1
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about L97.1
Is L97.1 billable?
- No. L97.1 is a header code. Report one of its more specific subcodes instead.