L12.0 Bullous pemphigoid

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from L12 Pemphigoid

Excludes1 (never code together)

• herpes gestationis (O26.4-)
• impetigo herpetiformis (L40.1)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 387 — Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders
• RxHCC V08: HCC 314 — Pemphigus, Pemphigoid, and Other Bullous Skin Disorders

MS-DRG index

Defines the logic of DRG(s) 595-596 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 694.5 Pemphigoid (approximate)

Code annotations containing back-references to L12.0

Back-references to L12.0

• Type 1 Excludes: L13.0 Dermatitis herpetiformis ("senile dermatitis herpetiformis (L12.0)")

Diagnosis Index entries for L12.0

• Dermatitis (eczematous) › herpetiformis (bullous) (erythematous) (pustular) (vesicular) › senile
• Erythema, erythematous (infectional) (inflammation) › multiforme (major) (minor) › pemphigoides
• Herpes, herpesvirus, herpetic › circinatus › bullosus
• Pemphigoid › bullous

Nearby codes

• L12 Pemphigoid
• L12.0 Bullous pemphigoid (this code)
• L12.1 Cicatricial pemphigoid
• L12.2 Chronic bullous disease of childhood
• L12.3 Acquired epidermolysis bullosa
• L12.30 Acquired epidermolysis bullosa, unspecified
• L12.31 Epidermolysis bullosa due to drug