2027 ICD-10-CM Diagnosis Code L90.4Acrodermatitis chronica atrophicans

ICD-10-CM Codes›L00–L99›L80-L99›L90

ICD-10-CM L90.4
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L90.4 is a billable ICD-10-CM diagnosis code for acrodermatitis chronica atrophicans. 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 acrodermatitis atrophicans chronica. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L90.4
Billable Status
Yes — Valid for Submission
Code Describes
Acrodermatitis chronica atrophicans
Short Description
Acrodermatitis chronica atrophicans
Same as the full description in the CMS dataset.
Parent Code
L90
Atrophic disorders of skin

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL90Atrophic disorders of skin
This CodeL90.4Acrodermatitis chronica atrophicans

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acrodermatitis atrophicans chronica
  • Infection of skin caused by Borreliella

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L90.4: 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.

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

Clinical InformationClinical

  • Acrodermatitis Chronica Atrophicans

    a late and chronic manifestation of lyme borreliosis that is characterized by chronic cutaneous atrophy.

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 L90.4 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 L90.4Overview

What is the ICD-10 code for acrodermatitis chronica atrophicans?

The ICD-10-CM code for acrodermatitis chronica atrophicans is L90.4 (sometimes written as L904). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L90.4 (Atrophic disorders of skin) a billable code?

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

What MS-DRG does L90.4 group to?

When acrodermatitis chronica atrophicans 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 L90.4?

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