2027 ICD-10-CM Diagnosis Code L57.1Actinic reticuloid
ICD-10-CM Codes›L00–L99›L55-L59›L57
- Billable — Valid for Submission
- Not Chronic
L57.1 is a billable ICD-10-CM diagnosis code for actinic reticuloid. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Actinic reticuloid
- Cutaneous T-cell pseudolymphoma
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L57.1: its own notes plus those printed at L57 and 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.
- 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.-)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L57.1, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming L57.1: they are not reported together with it, unless the two conditions are unrelated.
Excludes2 7
These codes carry an Excludes2 note naming L57.1: its condition is not part of those codes, and both may be reported when the patient has both.
- L98.7 Excessive and redundant skin and subcutaneous tissueskin changes due to chronic exposure to nonionizing radiation (L57.-) names L57.-, which includes this code
- Block L20-L30 Dermatitis and eczema
- L23 Allergic contact dermatitis
- L24 Irritant contact dermatitis
- L25 Unspecified contact dermatitis
- Block T20-T32
- X32 Exposure to sunlight
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Reticuloid, actinic L57.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About L57.1Overview
What is the ICD-10 code for actinic reticuloid?
The ICD-10-CM code for actinic reticuloid is L57.1 (sometimes written as L571). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
What MS-DRG does L57.1 group to?
When actinic reticuloid 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.
Does L57.1 need an additional code?
When the condition applies, yes. The Use Additional Code note at L57, which applies to L57.1, reads: code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90). The additional code is reported after L57.1.
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.
