ICD-10-CM 2027
ICD-10 code for keloid
From the official ICD-10-CM alphabetic index entry “Keloid, cheloid”. Page updated September 29, 2026.
About coding keloid
The ICD-10-CM code for keloid is L91.0 (Hypertrophic scar). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L91.0.
Within L91 (hypertrophic disorders of skin), L91.0 is specifically for hypertrophic scar. Related codes cover other hypertrophic disorders of the skin (L91.8) and hypertrophic disorder of the skin, unspecified (L91.9).
The conditions in its Excludes2 note aren't part of L91.0, but may be coded alongside it if the patient has both: acne keloid (L73.0) and scar NOS (L90.5).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific keloid codes (official index)
Common questions about keloid ICD-10 codes
What is the ICD-10 code for keloid?
- L91.0 — Hypertrophic scar. More specific codes apply when the documentation supports them: L73.0, L94.0, L91.0, L91.0.
What is the ICD-10 code for acne keloid?
- L73.0 — Acne keloid.
What is the ICD-10 code for addison's keloid?
- L94.0 — Localized scleroderma [morphea].
What is the ICD-10 code for hawkin's keloid?
- L91.0 — Hypertrophic scar.
What is the ICD-10 code for scar keloid?
- L91.0 — Hypertrophic scar.
Is L91.0 billable?
- Yes. L91.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L91.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L91.0 as a principal diagnosis.
Is L91.0 a CC or MCC?
- No. L91.0 is neither a CC nor an MCC under MS-DRG v44.0.