ICD-10-CM 2027
ICD-10 code for linear IgA dermatosis
From the official ICD-10-CM alphabetic index entry “Dermatosis › linear IgA”. Page updated September 29, 2026.
About coding linear IgA dermatosis
The ICD-10-CM code for linear IgA dermatosis is L13.8 (Other specified bullous disorders).
Within L13, choose L13.8 (Other specified bullous disorders) only when documentation doesn't support a more specific option: dermatitis herpetiformis (L13.0), Subcorneal pustular dermatitis (L13.1) and bullous disorder, unspecified (L13.9).
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 595 (Major Skin Disorders with MCC, relative weight 2.0239) and DRG 596 (Major Skin Disorders without MCC, relative weight 1.1071), 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.
Common questions about linear IgA dermatosis ICD-10 codes
What is the ICD-10 code for linear IgA dermatosis?
- L13.8 — Other specified bullous disorders.
Is L13.8 billable?
- Yes. L13.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L13.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L13.8 as a principal diagnosis.
Is L13.8 a CC or MCC?
- No. L13.8 is neither a CC nor an MCC under MS-DRG v44.0.