Dermatitis and eczema (L20-L30)
chapter 12: Diseases of the Skin and Subcutaneous Tissue
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Instructional notes
Excludes2: not included here, code separately if applicable
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers assigning pressure ulcer codes by site and stage, including unstageable, healing, healed, and progressing ulcers, and coding healing or progressing non-pressure chronic ulcers.
- Pressure ulcer stage codes (page 58)
- Non-Pressure Chronic Ulcers (page 60)
All codes under L20-L30
L20-L30 can't be used on a claim. Pick a billable code below; grey headings group them.
- L20Atopic dermatitis
- L20.0Besnier's prurigo
- L20.8Other atopic dermatitis
- L20.81Atopic neurodermatitis
- L20.82Flexural eczema
- L20.83Infantile (acute) (chronic) eczema
- L20.84Intrinsic (allergic) eczema
- L20.89Other atopic dermatitis
- L20.9Atopic dermatitis, unspecified
- L21Seborrheic dermatitis
- L21.0Seborrhea capitis
- L21.1Seborrheic infantile dermatitis
- L21.8Other seborrheic dermatitis
- L21.9Seborrheic dermatitis, unspecified
- L22Diaper dermatitis
- L23Allergic contact 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 with 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 with the skin
- L23.7Allergic contact dermatitis due to plants, except food
- L23.8Allergic contact dermatitis due to other agents
- L23.81Allergic contact dermatitis due to animal (cat) (dog) dander
- L23.89Allergic contact dermatitis due to other agents
- L23.9Allergic contact dermatitis, unspecified cause
- L24Irritant contact dermatitis
- 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 with 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
- L24.8Irritant contact dermatitis due to other agents
- L24.81Irritant contact dermatitis due to metals
- L24.89Irritant contact dermatitis due to other agents
- L24.9Irritant contact dermatitis, unspecified cause
- L24.AIrritant contact dermatitis due to friction or contact with body fluids
- L24.A0Irritant contact dermatitis due to friction or contact with body fluids, unspecified
- L24.A1Irritant contact dermatitis due to saliva
- L24.A2Irritant contact dermatitis due to fecal, urinary or dual incontinence
- L24.A9Irritant contact dermatitis due friction or contact with other specified body fluids
- L24.BIrritant contact dermatitis related to stoma or fistula
- L24.B0Irritant contact dermatitis related to unspecified stoma or fistula
- L24.B1Irritant contact dermatitis related to digestive stoma or fistula
- L24.B2Irritant contact dermatitis related to respiratory stoma or fistula
- L24.B3Irritant contact dermatitis related to fecal or urinary stoma or fistula
- L25Unspecified contact dermatitis
- L25.0Unspecified contact dermatitis due to cosmetics
- L25.1Unspecified contact dermatitis due to drugs in contact with skin
- L25.2Unspecified contact dermatitis due to dyes
- L25.3Unspecified contact dermatitis due to other chemical products
- L25.4Unspecified 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
- L26Exfoliative dermatitis
- L27Dermatitis due to substances taken internally
- L27.0Generalized skin eruption due to drugs and medicaments taken internally
- L27.1Localized skin eruption due to drugs and medicaments taken internally
- L27.2Dermatitis due to ingested food
- L27.8Dermatitis due to other substances taken internally
- L27.9Dermatitis due to unspecified substance taken internally
- L28Lichen simplex chronicus and prurigo
- L28.0Lichen simplex chronicus
- L28.1Prurigo nodularis
- L28.2Other prurigo
- L29Pruritus
- L29.0Pruritus ani
- L29.1Pruritus scroti
- L29.2Pruritus vulvae
- L29.3Anogenital pruritus, unspecified
- L29.8Other pruritus
- L29.81Cholestatic pruritus
- L29.89Other pruritus
- L29.9Pruritus, unspecified
- L30Other and unspecified dermatitis
- L30.0Nummular dermatitis
- L30.1Dyshidrosis [pompholyx]
- L30.2Cutaneous autosensitization
- L30.3Infective dermatitis
- L30.4Erythema intertrigo
- L30.5Pityriasis alba
- L30.8Other specified dermatitis
- L30.9Dermatitis, unspecified
L20-L30 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Eczema
Eczema is a term for several different types of skin swelling. Eczema is also called dermatitis. Most types cause dry, itchy skin and rashes on the face, inside the elbows and behind the knees, and on the hands and feet. Scratching the skin can cause it to turn red, and to swell and itch even more.
Read more about eczema on MedlinePlus