2026 ICD-10-CM Diagnosis Code L98.6Other infiltrative disorders of the skin and subcutaneous tissue
ICD-10-CM Codes›L00–L99›L80-L99›L98
- Billable — Valid for Submission
- Not Chronic
L98.6 is a billable ICD-10-CM diagnosis code for other infiltrative disorders of the skin and subcutaneous tissue. 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 benign lymphocytic infiltration of Jessner. 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.
- Benign lymphocytic infiltration of Jessner
- Bowel-associated dermatosis-arthritis syndrome
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 1 Excludes
- hyalinosis cutis et mucosae E78.89
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.
- Disorder (of) - See Also: Disease;
- infiltrative NEC - L98.6
- skin (lymphocytic) - L98.6
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Disorder(of)
- skin
- infiltrative NEC
- Infiltrate, infiltration
- skin (lymphocytic)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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
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Convert L98.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L98.6Overview
Is L98.6 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other infiltrative disorders of the skin and subcutaneous tissue on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does L98.6 group to?
When other infiltrative disorders of the skin and subcutaneous tissue 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 L98.6?
Under the General Equivalence Mappings, other infiltrative disorders of the skin and subcutaneous tissue 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.
