ICD-10-CM 2027
ICD-10 code for ocular pemphigus
From the official ICD-10-CM alphabetic index entry “Pemphigus › ocular”. Page updated September 29, 2026.
About coding ocular pemphigus
The ICD-10-CM code for ocular pemphigus is L12.1 (Cicatricial pemphigoid).
Within L12 (pemphigoid), L12.1 is specifically for cicatricial pemphigoid. Related codes cover bullous pemphigoid (L12.0), chronic bullous disease of childhood (L12.2), acquired epidermolysis bullosa (L12.3), other pemphigoid (L12.8) and unspecified (L12.9).
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 ocular pemphigus ICD-10 codes
What is the ICD-10 code for ocular pemphigus?
- L12.1 — Cicatricial pemphigoid.
Is L12.1 billable?
- Yes. L12.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L12.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L12.1 as a principal diagnosis.
Is L12.1 a CC or MCC?
- No. L12.1 is neither a CC nor an MCC under MS-DRG v44.0.