2027 ICD-10-CM Diagnosis Code L81.1Chloasma

ICD-10-CM Codes›L00–L99›L80-L99›L81

ICD-10-CM L81.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L81.1 is a billable ICD-10-CM diagnosis code for chloasma. 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, 795. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L81.1
Billable Status
Yes — Valid for Submission
Code Describes
Chloasma
Short Description
Chloasma
Same as the full description in the CMS dataset.
Parent Code
L81
Other disorders of pigmentation

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL81Other disorders of pigmentation
This CodeL81.1Chloasma

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chloasma
  • Chloasma bronzinum
  • Chloasma cachecticorum
  • Chloasma caloricum
  • Chloasma hepaticum
  • Chloasma toxicum
  • Chloasma traumaticum
  • Drug pigmentation
  • Drug-induced hypermelanosis
  • Drug-induced melasma
  • Drug-induced pigmentation
  • Hypermelanosis of undetermined etiology
  • Idiopathic chloasma
  • Melasma gravidarum

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L81.1: its own notes plus those printed at L81 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From L81 Other disorders of pigmentation applies to 10 codes

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 L81 Other disorders of pigmentation applies to 10 codes
  • nevus - see Alphabetical Index
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.

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 Pigmentation Disorders

Pigmentation means coloring. Skin pigmentation disorders affect the color of your skin. Your skin gets its color from a pigment called melanin. Special cells in the skin make melanin. When these cells become damaged or unhealthy, it affects melanin production. Some pigmentation disorders affect just patches of skin.

Read the full article at MedlinePlus

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

Convert L81.1 to ICD-9-CMHistory

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

ICD-9-CM
709.09 Other dyschromia
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 L81.1Overview

What is the ICD-10 code for chloasma?

The ICD-10-CM code for chloasma is L81.1 (sometimes written as L811). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L81.1 (Other disorders of pigmentation) a billable code?

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

What MS-DRG does L81.1 group to?

When chloasma is the principal diagnosis on an inpatient stay, it groups to MS-DRG 795, 607, 606, with relative weights from 0.2022 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.

Can L81.1 be reported with Q82.5?

Not as a rule. The Excludes1 note at L81, which applies to L81.1, lists "birthmark NOS (Q82.5)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of L81.1?

Under the General Equivalence Mappings, chloasma converts to ICD-9-CM 709.09 (other dyschromia). The mapping is approximate, so confirm the match fits the documentation.