2026 ICD-10-CM Diagnosis Code L87.1Reactive perforating collagenosis

ICD-10-CM Codes›L00–L99›L80-L99›L87

ICD-10-CM L87.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L87.1 is a billable ICD-10-CM diagnosis code for reactive perforating collagenosis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607. Coders also document this condition as acquired reactive perforating dermatosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L87.1
Billable Status
Yes — Valid for Submission
Code Describes
Reactive perforating collagenosis
Short Description
Reactive perforating collagenosis
Same as the full description in the CMS dataset.
Parent Code
L87
Transepidermal elimination disorders

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL87Transepidermal elimination disorders
This CodeL87.1Reactive perforating collagenosis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired reactive perforating dermatosis
  • Perforating dermatosis
  • Reactive fibrous tissue proliferation
  • Reactive perforating collagenosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Collagenosis, collagen disease(nonvascular) (vascular)
      • reactive perforating

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 L87.1 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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About L87.1Overview

Is L87.1 (Transepidermal elimination disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report reactive perforating collagenosis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does L87.1 group to?

When reactive perforating collagenosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of L87.1?

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

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.