2026 ICD-10-CM Diagnosis Code L57.1Actinic reticuloid

ICD-10-CM Codes›L00–L99›L55-L59›L57

ICD-10-CM L57.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L57.1 is a billable ICD-10-CM diagnosis code for actinic reticuloid. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L57.1
Billable Status
Yes — Valid for Submission
Code Describes
Actinic reticuloid
Short Description
Actinic reticuloid
Same as the full description in the CMS dataset.
Parent Code
L57
Skin changes due to chronic exposure to nonionizing radiation

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL55-L59Radiation-related disorders of the skin and subcutaneous tissue
CategoryL57Skin changes due to chronic exposure to nonionizing radiation
This CodeL57.1Actinic reticuloid

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Actinic reticuloid
  • Cutaneous T-cell pseudolymphoma

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.

    • Reticuloid, actinic

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

Sun Exposure

Ultraviolet (UV) rays are an invisible form of radiation. They can pass through your skin and damage your skin cells. Sunburns are a sign of skin damage. Suntans aren't healthy, either. They appear after the sun's rays have already killed some cells and damaged others.

Read the full article at MedlinePlus

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

Convert L57.1 to ICD-9-CMHistory

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

ICD-9-CM
692.73 Actnc retic actnc grnlma
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 L57.1Overview

Is L57.1 a billable code?

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

What MS-DRG does L57.1 group to?

When actinic reticuloid 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 L57.1?

Under the General Equivalence Mappings, actinic reticuloid converts to ICD-9-CM 692.73 (actnc retic actnc grnlma). 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.