ICD-10 · PDGM grouping

M30-M36 — Systemic connective tissue disorders

Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.

OASIS-E2 v1.00.0 · ingested 2026-04-26

Codes in range

No clinical group

A period cannot be grouped from these.

Barred as primary

CMS rejects these in the primary position.

Where these codes group

59 of the 84 codes in M30-M36 group to Musculoskeletal Rehabilitation, but the range is not uniform — it spreads across 2 clinical groups. A further 8 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.

Every code in M30-M36

Descriptions are CMS’s own, abbreviated as CMS abbreviates them.

Code	Description	Clinical group	Primary position
M300	Polyarteritis nodosa	A	Accepted
M301	Polyarteritis with lung involvement [Churg-Strauss]	A	Accepted
M302	Juvenile polyarteritis	A	Accepted
M303	Mucocutaneous lymph node syndrome [Kawasaki]	A	Accepted
M308	Other conditions related to polyarteritis nodosa	A	Accepted
M310	Hypersensitivity angiitis	A	Accepted
M3110	Thrombotic microangiopathy, unspecified	A	Accepted
M3111	Hematpoetc stem cell txpltation-assoc throm microangiopathy	None	Cannot group
M3119	Other thrombotic microangiopathy	A	Accepted
M312	Lethal midline granuloma	A	Accepted
M3130	Wegener's granulomatosis without renal involvement	A	Accepted
M3131	Wegener's granulomatosis with renal involvement	A	Accepted
M314	Aortic arch syndrome [Takayasu]	A	Accepted
M315	Giant cell arteritis with polymyalgia rheumatica	A	Accepted
M316	Other giant cell arteritis	A	Accepted
M317	Microscopic polyangiitis	A	Accepted
M318	Other specified necrotizing vasculopathies	A	Accepted
M319	Necrotizing vasculopathy, unspecified	A	Accepted
M320	Drug-induced systemic lupus erythematosus	E	Accepted
M3210	Systemic lupus erythematosus, organ or system involv unsp	E	Accepted
M3211	Endocarditis in systemic lupus erythematosus	E	Accepted
M3212	Pericarditis in systemic lupus erythematosus	E	Accepted
M3213	Lung involvement in systemic lupus erythematosus	E	Accepted
M3214	Glomerular disease in systemic lupus erythematosus	E	Accepted
M3215	Tubulo-interstitial nephrop in sys lupus erythematosus	E	Accepted
M3219	Oth organ or system involv in systemic lupus erythematosus	E	Accepted
M328	Other forms of systemic lupus erythematosus	E	Accepted
M329	Systemic lupus erythematosus, unspecified	E	Accepted
M3300	Juvenile dermatomyositis, organ involvement unspecified	E	Accepted
M3301	Juvenile dermatomyositis with respiratory involvement	E	Accepted
M3302	Juvenile dermatomyositis with myopathy	E	Accepted
M3303	Juvenile dermatomyositis without myopathy	E	Accepted
M3309	Juvenile dermatomyositis with other organ involvement	E	Accepted
M3310	Other dermatomyositis, organ involvement unspecified	E	Accepted
M3311	Other dermatomyositis with respiratory involvement	E	Accepted
M3312	Other dermatomyositis with myopathy	E	Accepted
M3313	Other dermatomyositis without myopathy	E	Accepted
M3319	Other dermatomyositis with other organ involvement	E	Accepted
M3320	Polymyositis, organ involvement unspecified	E	Accepted
M3321	Polymyositis with respiratory involvement	E	Accepted
M3322	Polymyositis with myopathy	E	Accepted
M3329	Polymyositis with other organ involvement	E	Accepted
M3390	Dermatopolymyositis, unsp, organ involvement unspecified	E	Accepted
M3391	Dermatopolymyositis, unsp with respiratory involvement	E	Accepted
M3392	Dermatopolymyositis, unspecified with myopathy	E	Accepted
M3393	Dermatopolymyositis, unspecified without myopathy	E	Accepted
M3399	Dermatopolymyositis, unsp with other organ involvement	E	Accepted
M340	Progressive systemic sclerosis	E	Accepted
M341	CR(E)ST syndrome	E	Accepted
M342	Systemic sclerosis induced by drug and chemical	E	Accepted
M3481	Systemic sclerosis with lung involvement	E	Accepted
M3482	Systemic sclerosis with myopathy	E	Accepted
M3483	Systemic sclerosis with polyneuropathy	E	Accepted
M3489	Other systemic sclerosis	E	Accepted
M349	Systemic sclerosis, unspecified	E	Accepted
M3500	Sjogren syndrome, unspecified	E	Accepted
M3501	Sjogren syndrome with keratoconjunctivitis	E	Accepted
M3502	Sjogren syndrome with lung involvement	E	Accepted
M3503	Sjogren syndrome with myopathy	E	Accepted
M3504	Sjogren syndrome with tubulo-interstitial nephropathy	E	Accepted
M3505	Sjogren syndrome with inflammatory arthritis	E	Accepted
M3506	Sjogren syndrome with peripheral nervous system involvement	E	Accepted
M3507	Sjogren syndrome with central nervous system involvement	E	Accepted
M3508	Sjogren syndrome with gastrointestinal involvement	E	Accepted
M3509	Sjogren syndrome with other organ involvement	E	Accepted
M350A	Sjogren syndrome with glomerular disease	E	Accepted
M350B	Sjogren syndrome with vasculitis	E	Accepted
M350C	Sjogren syndrome with dental involvement	E	Accepted
M351	Other overlap syndromes	E	Accepted
M352	Behcet's disease	E	Accepted
M353	Polymyalgia rheumatica	E	Accepted
M354	Diffuse (eosinophilic) fasciitis	E	Accepted
M355	Multifocal fibrosclerosis	E	Accepted
M356	Relapsing panniculitis [Weber-Christian]	E	Accepted
M357	Hypermobility syndrome	E	Accepted
M3581	Multisystem inflammatory syndrome	E	Accepted
M3589	Other specified systemic involvement of connective tissue	E	Accepted
M359	Systemic involvement of connective tissue, unspecified	None	Cannot group
M360	Dermato(poly)myositis in neoplastic disease	None	Cannot group
M361	Arthropathy in neoplastic disease	None	Cannot group
M362	Hemophilic arthropathy	None	Cannot group
M363	Arthropathy in other blood disorders	None	Cannot group
M364	Arthropathy in hypersensitivity reactions classd elswhr	None	Cannot group
M368	Systemic disord of conn tiss in oth diseases classd elswhr	None	Cannot group

Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.

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M30-M36 — Systemic connective tissue disorders

Where these codes group

Every code in M30-M36

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