ICD-10-CM Section · L20-L30
Dermatitis and eczema
89 codes in this section
89
Total Codes
74
Billable
15
Header (Non-Billable)
11
Top-Level Codes
About Section L20-L30
Section L20-L30 (L20-L30) covers dermatitis and eczema. It sits within the Diseases of the skin and subcutaneous tissue chapter (L00-L99). This section contains 89 ICD-10-CM codes, 74 billable diagnoses you can submit on a claim, and 15 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in L20-L30
Grouped by 3-character root code. Click any code for full detail.
L20
Atopic dermatitis
8 subcodes
| L20.0 | Besnier's prurigo | Billable |
| L20.8 | Other atopic dermatitis | Header |
| L20.81 | Atopic neurodermatitis | Billable |
| L20.82 | Flexural eczema | Billable |
| L20.83 | Infantile (acute) (chronic) eczema | Billable |
| L20.84 | Intrinsic (allergic) eczema | Billable |
| L20.89 | Other atopic dermatitis | Billable |
| L20.9 | Atopic dermatitis, unspecified | Billable |
L21
Seborrheic dermatitis
4 subcodes
| L21.0 | Seborrhea capitis | Billable |
| L21.1 | Seborrheic infantile dermatitis | Billable |
| L21.8 | Other seborrheic dermatitis | Billable |
| L21.9 | Seborrheic dermatitis, unspecified | Billable |
L22
Diaper dermatitis
0 subcodes
L23
Allergic contact dermatitis
12 subcodes
| L23.0 | Allergic contact dermatitis due to metals | Billable |
| L23.1 | Allergic contact dermatitis due to adhesives | Billable |
| L23.2 | Allergic contact dermatitis due to cosmetics | Billable |
| L23.3 | Allergic contact dermatitis due to drugs in contact with skin | Billable |
| L23.4 | Allergic contact dermatitis due to dyes | Billable |
| L23.5 | Allergic contact dermatitis due to other chemical products | Billable |
| L23.6 | Allergic contact dermatitis due to food in contact with the skin | Billable |
| L23.7 | Allergic contact dermatitis due to plants, except food | Billable |
| L23.8 | Allergic contact dermatitis due to other agents | Header |
| L23.81 | Allergic contact dermatitis due to animal (cat) (dog) dander | Billable |
| L23.89 | Allergic contact dermatitis due to other agents | Billable |
| L23.9 | Allergic contact dermatitis, unspecified cause | Billable |
L24
Irritant contact dermatitis
22 subcodes
| L24.0 | Irritant contact dermatitis due to detergents | Billable |
| L24.1 | Irritant contact dermatitis due to oils and greases | Billable |
| L24.2 | Irritant contact dermatitis due to solvents | Billable |
| L24.3 | Irritant contact dermatitis due to cosmetics | Billable |
| L24.4 | Irritant contact dermatitis due to drugs in contact with skin | Billable |
| L24.5 | Irritant contact dermatitis due to other chemical products | Billable |
| L24.6 | Irritant contact dermatitis due to food in contact with skin | Billable |
| L24.7 | Irritant contact dermatitis due to plants, except food | Billable |
| L24.8 | Irritant contact dermatitis due to other agents | Header |
| L24.81 | Irritant contact dermatitis due to metals | Billable |
| L24.89 | Irritant contact dermatitis due to other agents | Billable |
| L24.9 | Irritant contact dermatitis, unspecified cause | Billable |
| L24.A | Irritant contact dermatitis due to friction or contact with body fluids | Header |
| L24.A0 | Irritant contact dermatitis due to friction or contact with body fluids, unspecified | Billable |
| L24.A1 | Irritant contact dermatitis due to saliva | Billable |
| L24.A2 | Irritant contact dermatitis due to fecal, urinary or dual incontinence | Billable |
| L24.A9 | Irritant contact dermatitis due friction or contact with other specified body fluids | Billable |
| L24.B | Irritant contact dermatitis related to stoma or fistula | Header |
| L24.B0 | Irritant contact dermatitis related to unspecified stoma or fistula | Billable |
| L24.B1 | Irritant contact dermatitis related to digestive stoma or fistula | Billable |
| L24.B2 | Irritant contact dermatitis related to respiratory stoma or fistula | Billable |
| L24.B3 | Irritant contact dermatitis related to fecal or urinary stoma or fistula | Billable |
L25
Unspecified contact dermatitis
8 subcodes
| L25.0 | Unspecified contact dermatitis due to cosmetics | Billable |
| L25.1 | Unspecified contact dermatitis due to drugs in contact with skin | Billable |
| L25.2 | Unspecified contact dermatitis due to dyes | Billable |
| L25.3 | Unspecified contact dermatitis due to other chemical products | Billable |
| L25.4 | Unspecified contact dermatitis due to food in contact with skin | Billable |
| L25.5 | Unspecified contact dermatitis due to plants, except food | Billable |
| L25.8 | Unspecified contact dermatitis due to other agents | Billable |
| L25.9 | Unspecified contact dermatitis, unspecified cause | Billable |
L26
Exfoliative dermatitis
0 subcodes
L27
Dermatitis due to substances taken internally
5 subcodes
| L27.0 | Generalized skin eruption due to drugs and medicaments taken internally | Billable |
| L27.1 | Localized skin eruption due to drugs and medicaments taken internally | Billable |
| L27.2 | Dermatitis due to ingested food | Billable |
| L27.8 | Dermatitis due to other substances taken internally | Billable |
| L27.9 | Dermatitis due to unspecified substance taken internally | Billable |
L28
Lichen simplex chronicus and prurigo
3 subcodes
| L28.0 | Lichen simplex chronicus | Billable |
| L28.1 | Prurigo nodularis | Billable |
| L28.2 | Other prurigo | Billable |
L29
Pruritus
8 subcodes
| L29.0 | Pruritus ani | Billable |
| L29.1 | Pruritus scroti | Billable |
| L29.2 | Pruritus vulvae | Billable |
| L29.3 | Anogenital pruritus, unspecified | Billable |
| L29.8 | Other pruritus | Header |
| L29.81 | Cholestatic pruritus | Billable |
| L29.89 | Other pruritus | Billable |
| L29.9 | Pruritus, unspecified | Billable |
L30
Other and unspecified dermatitis
8 subcodes
| L30.0 | Nummular dermatitis | Billable |
| L30.1 | Dyshidrosis [pompholyx] | Billable |
| L30.2 | Cutaneous autosensitization | Billable |
| L30.3 | Infective dermatitis | Billable |
| L30.4 | Erythema intertrigo | Billable |
| L30.5 | Pityriasis alba | Billable |
| L30.8 | Other specified dermatitis | Billable |
| L30.9 | Dermatitis, unspecified | Billable |
Did this page help?
Quick signal so we know what to improve.
Thanks!
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Sorry to hear that.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team