2026 ICD-10-CM Diagnosis Code L92.1Necrobiosis lipoidica, not elsewhere classified
ICD-10-CM Codes›L00–L99›L80-L99›L92
- Billable — Valid for Submission
- Not Chronic
L92.1 is a billable ICD-10-CM diagnosis code for necrobiosis lipoidica, not elsewhere classified. 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 granulomatosis disciformis et progressiva. 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.
- Granulomatosis disciformis et progressiva
- Necrobiosis lipoidica
- Necrobiosis lipoidica, granulomatous type
- Necrobiosis lipoidica, necrobiotic type
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Necrobiosis - R68.89
- lipoidica NEC - L92.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Necrobiosis
- lipoidica NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Necrobiosis Lipoidica
a degenerative disease of the dermal connective tissue characterized by the development of erythematous papules or nodules in the pretibial area. the papules form plaques covered with telangiectatic vessels. more than half of the affected patients have diabetes.Necrobiosis Lipoidica
an uncommon inflammatory skin condition, often associated with diabetes mellitus, that is characterized by the formation of multiple shiny atrophic lesions thought to be due to collagen degeneration with a granulomatous response, thickening of blood vessel walls, and fat deposition. the lesions are usually found on the leg.
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 L92.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L92.1Overview
Is L92.1 (Granulomatous disorders of skin and subcutaneous tissue) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report necrobiosis lipoidica, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does L92.1 group to?
When necrobiosis lipoidica, not elsewhere classified 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 L92.1?
Under the General Equivalence Mappings, necrobiosis lipoidica, not elsewhere classified converts to ICD-9-CM 709.3 (degenerative skin disord). 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.
