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L97.304

✓ Billable

Non-pressure chronic ulcer of unspecified ankle with necrosis of bone

Diseases of the skin and subcutaneous tissue (L00-L99)

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

L97
  • • pressure ulcer (pressure area) (L89.-)
  • • skin infections (L00-L08)
  • • specific infections classified to A00-B99

📋 Code Instructions

inherited
L97
  • • Code first: any associated underlying condition, such as:
  • • Code first: any associated gangrene (I96)
  • • Code first: 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-)
  • • Code first: chronic venous hypertension (I87.31-, I87.33-)
  • • Code first: diabetic ulcers (E08.621, E08.622, E09.621, E09.622, E10.621, E10.622, E11.621, E11.622, E13.621, E13.622)
  • • Code first: postphlebitic syndrome (I87.01-, I87.03-)
  • • Code first: postthrombotic syndrome (I87.01-, I87.03-)
  • • Code first: varicose ulcer (I83.0-, I83.2-)

Clinical Description

ICD-10-CM code L97.304 represents non-pressure chronic ulcer of unspecified ankle with necrosis of bone. This code falls under the Diseases of the skin and subcutaneous tissue (L00-L99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code L97.304?

ICD-10-CM code L97.304 is "Non-pressure chronic ulcer of unspecified ankle with necrosis of bone". It belongs to the category: Diseases of the skin and subcutaneous tissue (L00-L99).

Is L97.304 a billable ICD-10 code?

Yes, L97.304 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can L97.304 be coded with other codes?

L97.304 has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in L97.30

Other codes in the same category that may be relevant for differential coding:

L97.301Non-pressure chronic ulcer of unspecified ankle limited to breakdown of skinL97.302Non-pressure chronic ulcer of unspecified ankle with fat layer exposedL97.303Non-pressure chronic ulcer of unspecified ankle with necrosis of muscleL97.305Non-pressure chronic ulcer of unspecified ankle with muscle involvement without evidence of necrosisL97.306Non-pressure chronic ulcer of unspecified ankle with bone involvement without evidence of necrosisL97.308Non-pressure chronic ulcer of unspecified ankle with other specified severityL97.309Non-pressure chronic ulcer of unspecified ankle with unspecified severity

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Code Information

CodeL97.304
BillableYes
ParentL97.30
CategoryDiseases of the skin and subcutaneous tissue (L00-L99)
Excludes10 rule(s)
Excludes23 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)