ICD10BillableValid for clinical use
ICD-10 Code L98.9: Disorder of the skin and subcutaneous tissue, unspecified
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the skin and subcutaneous tissue (L00-L99).
When is it used?
- May be used when a clinician documents disorder of the skin and subcutaneous tissue, unspecified in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
Code hierarchy
chapter
12Diseases of the skin and subcutaneous tissue (L00-L99)
block
L80-L99Other disorders of the skin and subcutaneous tissue
category
L98Other disorders of skin and subcutaneous tissue, not elsewhere classified
currentL98
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
Dermatologist
Related codes
L98.0Pyogenic granulomacodeL98.1Factitial dermatitiscodeL98.2Febrile neutrophilic dermatosis [Sweet]codeL98.3Eosinophilic cellulitis [Wells]codeL98.4Non-pressure chronic ulcer of skin, not elsewhere classifiedcategoryL98.ANon-pressure chronic ulcer of upper limb, not elsewhere classifiedcategoryL98.5Mucinosis of the skincodeL98.6Other infiltrative disorders of the skin and subcutaneous tissuecodeL98.7Excessive and redundant skin and subcutaneous tissuecodeL98.8Other specified disorders of the skin and subcutaneous tissuecode
Sibling codes
L98.0Pyogenic granulomabillableL98.1Factitial dermatitisbillableL98.2Febrile neutrophilic dermatosis [Sweet]billableL98.3Eosinophilic cellulitis [Wells]billableL98.4Non-pressure chronic ulcer of skin, not elsewhere classifiedL98.ANon-pressure chronic ulcer of upper limb, not elsewhere classifiedL98.5Mucinosis of the skinbillableL98.6Other infiltrative disorders of the skin and subcutaneous tissuebillableL98.7Excessive and redundant skin and subcutaneous tissuebillableL98.8Other specified disorders of the skin and subcutaneous tissuebillable
Coverage-related procedures and services
CPT 19300high
MASTECTOMY FOR GYNECOMASTIA
Source: CMS coverage guidance
CPT 88182high
FLOW CYTOMETRY, CELL CYCLE OR DNA ANALYSIS
Source: CMS coverage guidance
CPT 88185high
FLOW CYTOMETRY, CELL SURFACE, CYTOPLASMIC, OR NUCLEAR MARKER, TECHNICAL COMPONENT ONLY; EACH ADDITIONAL MARKER (LIST SEPARATELY IN ADDITION TO CODE FOR FIRST MARKER)
Source: CMS coverage guidance
CPT 88184high
FLOW CYTOMETRY, CELL SURFACE, CYTOPLASMIC, OR NUCLEAR MARKER, TECHNICAL COMPONENT ONLY; FIRST MARKER
Source: CMS coverage guidance
CPT 88189high
FLOW CYTOMETRY, INTERPRETATION; 16 OR MORE MARKERS
Source: CMS coverage guidance
CPT 88187high
FLOW CYTOMETRY, INTERPRETATION; 2 TO 8 MARKERS
Source: CMS coverage guidance
Mapped diagnoses and classifications
SNOMED_CT 403753000high
Adverse cutaneous reaction to acupuncture
Source: SNOMED International ICD-10 map
SNOMED_CT 838459007high
Adverse cutaneous reaction to carrier oil
Source: SNOMED International ICD-10 map
SNOMED_CT 403750002high
Adverse cutaneous reaction to herbal medicine
Source: SNOMED International ICD-10 map
SNOMED_CT 838426009high
Adverse cutaneous reaction to volatile oil
Source: SNOMED International ICD-10 map
SNOMED_CT 238488003high
Amputation-related dermatosis
Source: SNOMED International ICD-10 map
SNOMED_CT 238451001high
Animal-induced dermatosis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
L98.9
Common synonyms
Disorder of the skin and subcutaneous tissue, unspecifiedDisorder of the skin and subcutaneous tissue
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.