2027 ICD-10-CM Diagnosis Code L91.8Other hypertrophic disorders of the skin

ICD-10-CM Codes›L00–L99›L80-L99›L91

ICD-10-CM L91.8
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L91.8 is a billable ICD-10-CM diagnosis code for other hypertrophic disorders of the skin. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. Coders also document this condition as benign neoplasm of skin of neck. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L91.8
Billable Status
Yes — Valid for Submission
Code Describes
Other hypertrophic disorders of the skin
Short Description
Other hypertrophic disorders of the skin
Same as the full description in the CMS dataset.
Parent Code
L91
Hypertrophic disorders of skin

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL91Hypertrophic disorders of skin
This CodeL91.8Other hypertrophic disorders of the skin

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign neoplasm of skin of neck
  • Fibroepithelial polyp of eyelid
  • Hypertrophy of dermal papillae
  • Multiple skin tags
  • Multiple skin tags of eyelids
  • Multiple skin tags on neck
  • Skin tag

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L91.8: its own notes plus those printed at Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • 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.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name L91.8, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming L91.8: its condition is not part of those codes, and both may be reported when the patient has both.

  • L85 Other epidermal thickening
    hypertrophic disorders of the skin (L91.-) names L91.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SKN007
Other specified and unspecified skin disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Skin Conditions

Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:

The full article covers:

  • What does your skin do?
  • What problems and conditions can affect your skin?
  • How can I keep my skin healthy?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert L91.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
701.8 Skin hypertro/atroph NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L91.8Overview

What is the ICD-10 code for other hypertrophic disorders of the skin?

The ICD-10-CM code for other hypertrophic disorders of the skin is L91.8 (sometimes written as L918). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L91.8 (Hypertrophic disorders of skin) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other hypertrophic disorders of the skin on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does L91.8 group to?

When other hypertrophic disorders of the skin is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of L91.8?

Under the General Equivalence Mappings, other hypertrophic disorders of the skin converts to ICD-9-CM 701.8 (skin hypertro/atroph NEC). The mapping is approximate, so confirm the match fits the documentation.