ICD-10 codes for Dermatitis
Dermatitis is coded primarily under L30.9, L20, L20.9 in the ICD-10-CM (Clinical Modification) classification. Top-level categories include L20 (Atopic dermatitis); L21 (Seborrheic dermatitis); L22 (Diaper dermatitis); L23 (Allergic contact dermatitis). The 2025 ICD-10-CM code set includes 89 codes related to dermatitis, of which 74 are billable (specific enough to appear on a medical claim).
Dermatitis (eczema) is a group of inflammatory skin conditions. ICD-10-CM groups dermatitis codes under L20 to L30. L20 covers atopic dermatitis, L21 seborrheic dermatitis, L23 to L25 contact dermatitis (allergic vs irritant), and L30.9 is unspecified dermatitis. These codes are common in dermatology and primary care.
Total Codes
89
Billable Codes
74
Categories
11
SNOMED CT Concepts
25+
Top 12 Relevant ICD-10 Codes
The codes most commonly assigned to dermatitis, ranked by primary-match status, billable status, and specificity. Tap a code to see its full ICD-10 detail page.
L20.9Atopic dermatitis, unspecified
L30.9Dermatitis, unspecified
L20Atopic dermatitis
L21Seborrheic dermatitis
L23Allergic contact dermatitis
L24Irritant contact dermatitis
L25Unspecified contact dermatitis
L22Diaper dermatitis
L26Exfoliative dermatitis
L20.0Besnier's prurigo
L21.0Seborrhea capitis
L21.1Seborrheic infantile dermatitis
Primary Code Categories
These are the top-level ICD-10-CM categories for dermatitis. Click any code to see all specific subcodes within that group.
L20Atopic dermatitis
L21Seborrheic dermatitis
L22Diaper dermatitis
L23Allergic contact dermatitis
L24Irritant contact dermatitis
L25Unspecified contact dermatitis
L26Exfoliative dermatitis
L27Dermatitis due to substances taken internally
L28Lichen simplex chronicus and prurigo
L29Pruritus
L30Other and unspecified dermatitis
Billable / Specific Codes (74)
Specific ICD-10-CM codes that can be reported on medical claims for dermatitis.
L20.0Besnier's prurigo
L20.81Atopic neurodermatitis
L20.82Flexural eczema
L20.83Infantile (acute) (chronic) eczema
L20.84Intrinsic (allergic) eczema
L20.89Other atopic dermatitis
L20.9Atopic dermatitis, unspecified
L21.0Seborrhea capitis
L21.1Seborrheic infantile dermatitis
L21.8Other seborrheic dermatitis
L21.9Seborrheic dermatitis, unspecified
L22Diaper dermatitis
L23.0Allergic contact dermatitis due to metals
L23.1Allergic contact dermatitis due to adhesives
L23.2Allergic contact dermatitis due to cosmetics
L23.3Allergic contact dermatitis due to drugs in contact w skin
L23.4Allergic contact dermatitis due to dyes
L23.5Allergic contact dermatitis due to other chemical products
L23.6Allergic contact dermatitis due to food in contact w skin
L23.7Allergic contact dermatitis due to plants, except food
L23.81Allergic contact dermatitis due to animal (cat) (dog) dander
L23.89Allergic contact dermatitis due to other agents
L23.9Allergic contact dermatitis, unspecified cause
L24.0Irritant contact dermatitis due to detergents
L24.1Irritant contact dermatitis due to oils and greases
L24.2Irritant contact dermatitis due to solvents
L24.3Irritant contact dermatitis due to cosmetics
L24.4Irritant contact dermatitis due to drugs in contact w skin
L24.5Irritant contact dermatitis due to other chemical products
L24.6Irritant contact dermatitis due to food in contact with skin
L24.7Irritant contact dermatitis due to plants, except food
L24.81Irritant contact dermatitis due to metals
L24.89Irritant contact dermatitis due to other agents
L24.9Irritant contact dermatitis, unspecified cause
L24.A0Irritant cntct derm d/t friction or cntct w body fluids,unsp
L24.A1Irritant contact dermatitis due to saliva
L24.A2Irritant cntct derm d/t fecal, urinry or dual incontinence
L24.A9Irritant cntct derm due friction or cntct w oth body fluids
L24.B0Irritant contact dermatitis related to unsp stoma or fistula
L24.B1Irritant contact derm related to digestive stoma or fistula
L24.B2Irritant contact dermatitis related to resp stoma or fistula
L24.B3Irritant cntct derm rel to fecal or urinary stoma or fistula
L25.0Unspecified contact dermatitis due to cosmetics
L25.1Unsp contact dermatitis due to drugs in contact with skin
L25.2Unspecified contact dermatitis due to dyes
L25.3Unsp contact dermatitis due to other chemical products
L25.4Unsp contact dermatitis due to food in contact with skin
L25.5Unspecified contact dermatitis due to plants, except food
L25.8Unspecified contact dermatitis due to other agents
L25.9Unspecified contact dermatitis, unspecified cause
...and 24 more specific codes. Search all codes.
Cross-Mappings to Other Standards
ICD-10-CM codes for dermatitis link to several adjacent terminologies. These mappings are precomputed from official sources (NLM RxNav, UMLS Metathesaurus, SNOMED CT International) and served via AutoICD's reference and translate APIs.
SNOMED CT
25+ concepts mapped from this code group. Concept IDs include 1240421004, 200773006, 200775004, 1251410008, ....
Browse SNOMED CT directoryUMLS Metathesaurus
25+ CUIs indexed. Sample: C0011615, C2242769, C0494831, C0406296, ....
Browse UMLS directoryICD-11
ICD-11 (WHO 2022) classifies many of these conditions under different chapter and stem-code structures. Use the converter to see specific ICD-10 to ICD-11 mappings.
Open ICD-10 to ICD-11 converterFrequently Asked Questions
What is the ICD-10 code for dermatitis?
The primary ICD-10-CM codes for dermatitis are L30.9, L20, L20.9. Across all sub-categories, 89 codes are grouped under dermatitis, with 74 marked as billable (specific enough for a medical claim).
How many ICD-10 codes are there for dermatitis?
There are 89 ICD-10-CM codes related to dermatitis. Of these, 74 are billable specific codes and 15 are non-billable header categories that organize the specific codes underneath them. Header codes cannot be reported on a claim by themselves.
Is there a billable ICD-10 code for dermatitis?
Yes. 74 of the 89 ICD-10-CM codes for dermatitis are billable. Common examples include L20.0 (Besnier's prurigo); L20.81 (Atopic neurodermatitis); L20.82 (Flexural eczema). Code to the highest level of specificity supported by the documentation.
Which dermatitis ICD-10 code should I use for billing?
The most commonly used billable codes for dermatitis include: L20.0 (Besnier's prurigo); L20.81 (Atopic neurodermatitis); L20.82 (Flexural eczema). The correct code depends on the documented clinical presentation, including any complications, episode (acute / chronic), and laterality where applicable. Always code to the highest level of specificity supported by the clinical documentation.
Is L30.9 a billable ICD-10 code?
Yes, L30.9 (Dermatitis, unspecified) is a billable / specific ICD-10-CM code that can be reported on insurance claims.
What are the SNOMED CT concepts for dermatitis?
The ICD-10 codes for dermatitis map to at least 25 SNOMED CT concepts. Examples of SNOMED CT concept IDs in this group include 1240421004, 200773006, 200775004, 1251410008, 1251414004. SNOMED CT is a clinical terminology used in electronic health records; AutoICD's coding API returns SNOMED CT IDs alongside each ICD-10 code via the include_snomed=true flag.
What UMLS Concept Unique Identifiers (CUIs) cover dermatitis?
The ICD-10 codes for dermatitis are linked to at least 25 UMLS CUIs in the National Library of Medicine's Metathesaurus. Sample CUIs include C0011615, C2242769, C0494831, C0406296, C0263224. UMLS CUIs unify the same concept across SNOMED CT, ICD-10, ICD-11, RxNorm, MeSH, and dozens of other source vocabularies.
What are other names for dermatitis in ICD-10?
Dermatitis may also be referred to as: dermatitis, eczema, atopic dermatitis, contact dermatitis, seborrheic dermatitis. The same ICD-10-CM codes apply regardless of which term appears in the clinical documentation. Synonyms are surfaced by AutoICD's NER pass and mapped to the canonical ICD-10 family above.
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