Alphabetic Index FY2027

L97.225

Non-pressure chronic ulcer of left calf with muscle involvement without evidence of necrosis

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L80–L99 Other disorders of the skin and subcutaneous tissue

BillableComplete code, valid to report
Care settingsHome Health Primary · WoundHospital CC

L97.225 (also written L97225) is a billable ICD-10-CM diagnosis code for non-pressure chronic ulcer of left calf with muscle involvement without evidence of necrosis. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 168 codes in category L97 (Non-pressure chronic ulcer of lower limb, not elsewhere classified). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code first instruction and 13 Excludes2 entries.

Guidelines tips

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

A non-pressure ulcer described as healing is coded from the documentation. If the severity is not documented, the unspecified-severity code is assigned.

Guidelines I.C.12.b.2Non-pressure chronic ulcersRead the official text

Pressure ulcer stage, ulcer depth, BMI, NIHSS and coma scale may be coded from other clinicians' documentation. The diagnosis itself must be documented by the patient's provider.

Guidelines I.B.14Documentation by clinicians other than the providerRead the official text

Code first

If the underlying condition listed here is present and known, sequence it first.

Inherited from L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from L97 Non-pressure chronic ulcer of lower limb, not elsewhere classified
  • pressure ulcer (pressure area) (L89.-)
  • skin infections (L00-L08)
  • specific infections classified to A00-B99
Also from chapter/block level (10 notes)
Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • lipomelanotic reticulosis (I89.8)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • viral warts (B07.-)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Wound clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

Hospital CC

Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 325 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix C

Includes

Further defines or gives examples of the content of the category.

Inherited 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

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 1 entry