All ICD10 Codes
M35Non-billable

Other systemic involvement of connective tissue

Diseases of the Musculoskeletal System and Connective Tissue·Systemic connective tissue disorders (M30-M36)·category·FY 2026

Use a more specific code (8 billable, 2 non-billable)
M35.0Sjögren syndromehas subcodesM35.1Other overlap syndromesM35.2Behçet's diseaseM35.3Polymyalgia rheumaticaM35.4Diffuse (eosinophilic) fasciitisM35.5Multifocal fibrosclerosisM35.6Relapsing panniculitis [Weber-Christian]M35.7Hypermobility syndromeM35.8Other specified systemic involvement of connective tissuehas subcodesM35.9Systemic involvement of connective tissue, unspecified

CH13 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

M30-M36 Parent Instructions

Includes
  • autoimmune disease NOS
  • collagen (vascular) disease NOS
  • systemic autoimmune disease
  • systemic collagen (vascular) disease
Excludes1(Not coded here. Use a different code.)
  • autoimmune disease, single organ or single cell-type -code to relevant condition category

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • reactive perforating collagenosis (L87.1)

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M30-M36Systemic connective tissue disorders (M30-M36)
M35Other systemic involvement of connective tissueNot billable
M35.0Sjögren syndromeSubcodes
M35.1Other overlap syndromesBillable
M35.2Behçet's diseaseBillable
M35.3Polymyalgia rheumaticaBillable
M35.4Diffuse (eosinophilic) fasciitisBillable
M35.5Multifocal fibrosclerosisBillable
M35.6Relapsing panniculitis [Weber-Christian]Billable
M35.7Hypermobility syndromeBillable
M35.8Other specified systemic involvement of connective tissueSubcodes
M35.9Systemic involvement of connective tissue, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.