ICD-10-CM 2027
ICD-10 code for eczema
Confirmed by the official ICD-10-CM index entry “dermatitis (eczematous)”. Page updated September 29, 2026.
About coding eczema
The ICD-10-CM code for eczema is L30.9 (Dermatitis, unspecified). The official index lists 14 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L30.9.
It is also searched as dermatitis.
Within L30, choose L30.9 (Dermatitis, unspecified) only when documentation doesn't support a more specific option: Nummular dermatitis (L30.0), Dyshidrosis [pompholyx] (L30.1), cutaneous autosensitization (L30.2), infective dermatitis (L30.3), erythema intertrigo (L30.4), pityriasis alba (L30.5) and other specified dermatitis (L30.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Related Eczema codes
- L20.0 Besnier's prurigo
- L20.81 Atopic neurodermatitis
- L20.82 Flexural eczema
- L20.83 Infantile (acute) (chronic) eczema
- L20.84 Intrinsic (allergic) eczema
- L20.89 Other atopic dermatitis
- L20.9 Atopic dermatitis, unspecified
- L30.0 Nummular dermatitis
- L30.1 Dyshidrosis [pompholyx]
- L30.2 Cutaneous autosensitization
- L30.3 Infective dermatitis
- L30.4 Erythema intertrigo
- L30.5 Pityriasis alba
- L30.8 Other specified dermatitis
Common questions about eczema ICD-10 codes
What is the ICD-10 code for eczema?
- L30.9 — Dermatitis, unspecified. More specific codes apply when the documentation supports them: L20.0, L20.81, L20.82, L20.83 and others below.
What is the ICD-10 code for besnier's prurigo?
- L20.0 — Besnier's prurigo.
What is the ICD-10 code for atopic neurodermatitis?
- L20.81 — Atopic neurodermatitis.
What is the ICD-10 code for flexural eczema?
- L20.82 — Flexural eczema.
What is the ICD-10 code for infantile (acute) (chronic) eczema?
- L20.83 — Infantile (acute) (chronic) eczema.
What is the ICD-10 code for intrinsic (allergic) eczema?
- L20.84 — Intrinsic (allergic) eczema.
What is the ICD-10 code for other atopic dermatitis?
- L20.89 — Other atopic dermatitis.
Is L30.9 billable?
- Yes. L30.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L30.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L30.9 as a principal diagnosis.
Is L30.9 a CC or MCC?
- No. L30.9 is neither a CC nor an MCC under MS-DRG v44.0.