M35.2 Behçet's disease

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

Applies from M35 Other systemic involvement of connective tissue

Excludes1 (never code together)

• reactive perforating collagenosis (L87.1)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 94 — Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders
• CMS-HCC V22: HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
• RxHCC V08: HCC 83 — Rheumatoid Arthritis and Other Inflammatory Polyarthropathy
• ESRD V24: HCC 40

MS-DRG index

Defines the logic of DRG(s) 545-547 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 136.1 Behcet's syndrome (approximate)
• 136.1 Behcet's syndrome (approximate)
• 711.20 Arthropathy in Behcet's syndrome, site unspecified (approximate)

Code annotations containing back-references to M35.2

Back-references to M35.2

• Type 1 Excludes: M02 Postinfective and reactive arthropathies ("Behçet's disease (M35.2)")
• Type 2 Excludes: M45 Ankylosing spondylitis ("Behçet's disease (M35.2)")
• Code First: N77.0 Ulceration of vulva in diseases classified elsewhere ("Behçet's disease (M35.2)")

Back-references to M35

• Type 2 Excludes: I77 Other disorders of arteries and arterioles ("collagen (vascular) diseases (M30-M36)")
• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to systemic connective tissue disorders (M30-M36)")
• Code First: J84.170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere ("systemic connective tissue disorders (M30-M36)")
• Type 1 Excludes: L94 Other localized connective tissue disorders ("systemic connective tissue disorders (M30-M36)")

Diagnosis Index entries for M35.2

• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) › in (due to) › Behçet's syndrome
• Behçet's disease or syndrome
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › vagina › in Behçet's disease
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › vulva (acute) (infectional) › in (due to) › Behçet's disease

Nearby codes

• M35.0A Sjogren syndrome with glomerular disease
• M35.0B Sjogren syndrome with vasculitis
• M35.0C Sjogren syndrome with dental involvement
• M35.09 Sjogren syndrome with other organ involvement
• M35.1 Other overlap syndromes
• M35.2 Behcet's disease (this code)
• M35.3 Polymyalgia rheumatica
• M35.4 Diffuse (eosinophilic) fasciitis
• M35.5 Multifocal fibrosclerosis
• M35.6 Relapsing panniculitis [Weber-Christian]
• M35.7 Hypermobility syndrome