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ICD-10-CM Code L91.0
Hypertrophic scar

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

L91.0 is a billable ICD code used to specify a diagnosis of hypertrophic scar. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code L910 is used to code Keloid

A keloid (/ˈkiːlɔɪd/; also keloidal scar) is the formation of a type of scar which, depending on its maturity, is composed mainly of either type III (early) or type I (late) collagen. It is a result of an overgrowth of granulation tissue (collagen type 3) at the site of a healed skin injury which is then slowly replaced by collagen type 1. Keloids are firm, rubbery lesions or shiny, fibrous nodules, and can vary from pink to the colour of the patient's flesh or red to dark brown in color. A keloid scar is benign and not contagious, but sometimes accompanied by severe itchiness, pain, and changes in texture. In severe cases, it can affect movement of skin. Keloid scars are seen 15 times more frequently in African Americans than in Caucasians.

Specialty: Dermatology
MeSH Code: D007627
ICD 9 Code: 701.4

Postoperative keloid on the wrist

Source: Wikipedia

Coding Notes for L91.0 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Keloid scar
Code Type-2 Excludes:
Type-2 Excludes
Type-2 Excludes means the excluded conditions are different, although they may appear similar. A patient may have both conditions, but one does not include the other. Excludes 2 means "not coded here."
Acne keloid - instead, use code L73.0
Scar NOS - instead, use code L90.5

MS-DRG Mapping

  • DRG Group #606-607 - Minor skin disorders with MCC.
  • DRG Group #606-607 - Minor skin disorders without MCC.

Related Concepts SNOMET-CT

  • Hypertrophic acne scar (disorder)
  • Acne scars - mixed atrophic and hypertrophic (disorder)

ICD-10-CM Alphabetical Index References for 'L91.0 - Hypertrophic scar'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code L91.0. Click on any term below to browse the alphabetical index.

Kelis (L91.0)
Keloid, cheloid (L91.0)
Keloma (L91.0)


Keloid scar (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 701.4 was previously used, L91.0 is the appropriate modern ICD10 code.

Parent Code: L91 - Hypertrophic disorders of skin

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/L910