L12.0

Billable

Bullous pemphigoid

HCC Category Mapping

V28HCC 387 — Pemphigus and Other Autoimmune Skin Conditions

0.262

RxHCCHCC 314 — Pemphigus

0.000

What This Code Means

An autoimmune blistering disease where the immune system attacks the skin's basement membrane, causing large, fluid-filled blisters that are less painful than pemphigus.

Coding Tips

•Bullous pemphigoid typically presents with tense blisters that don't rupture easily, distinguishing it from pemphigus
•Document any associated conditions or complications such as secondary infections

Clinical Significance

Bullous pemphigoid is the most common autoimmune blistering disease in elderly patients, causing large tense blisters with better prognosis than pemphigus. This diagnosis indicates a subepidermal blistering disease requiring immunosuppressive therapy but with lower mortality risk.

Documentation Requirements

✓Clinical presentation with large, tense blisters
✓Typical patient demographics (elderly)
✓Histopathologic evidence of subepidermal blistering
✓Direct immunofluorescence showing linear basement membrane deposits
✓BP180 and/or BP230 antibody testing results
✓Assessment of disease extent and severity
✓Treatment plan with immunosuppressive agents
✓Monitoring for treatment complications

Commonly Confused Codes

L10.0 — Pemphigus vulgaris with intraepidermal blistering L12.1 — Cicatricial pemphigoid with scarring tendency L13.0 — Dermatitis herpetiformis with different distribution L51.1 — Stevens-Johnson syndrome with different etiology L12.8 — Other pemphigoid variants

Code Hierarchy

└L12Pemphigoid └L12.0Bullous pemphigoid

└L12.0Bullous pemphigoid