ICD-10-CM 2027
ICD-10 code for relapsing panniculitis
From the official ICD-10-CM alphabetic index entry “Panniculitis (nodular) (nonsuppurative) › relapsing”. Page updated September 29, 2026.
About coding relapsing panniculitis
The ICD-10-CM code for relapsing panniculitis is M35.6 (Relapsing panniculitis [Weber-Christian]).
Within M35 (other systemic involvement of connective tissue), M35.6 is specifically for relapsing panniculitis [Weber-Christian]. Related codes cover Sjogren syndrome (M35.0), other overlap syndromes (M35.1), Behcet's disease (M35.2), polymyalgia rheumatica (M35.3), diffuse (eosinophilic) fasciitis (M35.4), multifocal fibrosclerosis (M35.5), hypermobility syndrome (M35.7), other specified systemic involvement of connective tissue (M35.8) and 1 more.
Don't report M35.6 together with the conditions in its Excludes1 note: lupus panniculitis (L93.2) and panniculitis NOS (M79.3-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for M35.6)
Common questions about relapsing panniculitis ICD-10 codes
What is the ICD-10 code for relapsing panniculitis?
- M35.6 — Relapsing panniculitis [Weber-Christian].
Is M35.6 billable?
- Yes. M35.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M35.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M35.6 as a principal diagnosis.
Is M35.6 a CC or MCC?
- No. M35.6 is neither a CC nor an MCC under MS-DRG v44.0.