L97.21 – Non-pressure chronic ulcer of right calf
ICD-10-CM 2027 diagnosis code · Other disorders of the skin and subcutaneous tissue
- Code
L97.21(claims format:L9721)- Description
- Non-pressure chronic ulcer of right calf
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 12. Diseases of the skin and subcutaneous tissue (L00-L99)
- Block
- L80-L99 Other disorders of the skin and subcutaneous tissue
- Parent codes
- L97 › L97.2
Billable codes under L97.21
L97.21 is a header code and cannot be used on claims. Choose the most specific code:
- L97.211 – Non-pressure chronic ulcer of right calf limited to breakdown of skinBillable
- L97.212 – Non-pressure chronic ulcer of right calf with fat layer exposedBillable
- L97.213 – Non-pressure chronic ulcer of right calf with necrosis of muscleBillable
- L97.214 – Non-pressure chronic ulcer of right calf with necrosis of boneBillable
- L97.215 – Non-pressure chronic ulcer of right calf with muscle involvement without evidence of necrosisBillable
- L97.216 – Non-pressure chronic ulcer of right calf with bone involvement without evidence of necrosisBillable
- L97.218 – Non-pressure chronic ulcer of right calf with other specified severityBillable
- L97.219 – Non-pressure chronic ulcer of right calf with unspecified severityBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
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-)
L97.2 – Non-pressure chronic ulcer of calf
- Non-pressure chronic ulcer of shin
Related codes in L97.2
Frequently asked questions
What is ICD-10 code L97.21?
L97.21 is the ICD-10-CM code for non-pressure chronic ulcer of right calf, in the block L80-L99 (Other disorders of the skin and subcutaneous tissue).
Is L97.21 a billable code?
No. L97.21 is a header code with more specific child codes; report one of the billable codes listed above.
What category does L97.21 belong to?
It belongs to category L97 – Non-pressure chronic ulcer of lower limb, not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.