DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M34 Systemic sclerosis [scleroderma]

  • Header · not billable

M34 is not billable. The category heads 8 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • CRST syndrome → M34.1
  • CREST syndrome → M34.1
  • Scleroderma, sclerodermia (acrosclerotic) (diffuse) (generalized) (progressive) (pulmonary) → M34.9-

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M30-M36 Systemic connective tissue disorders (M30-M36)
  3. M34 Systemic sclerosis [scleroderma]
Billable codes
8
Subdivisions
5
CC / MCC codes
2 / 0
HCC V28 codes
7
New FY2027
0
Index entries
17

Codes in M34

  1. M34.0
    Progressive systemic sclerosis
    Billable93
  2. M34.1
    CR(E)ST syndrome
    Billable93
    Inclusion terms 1

    Inclusion terms

    • Combination of calcinosis, Raynaud's phenomenon, esophageal dysfunction, sclerodactyly, telangiectasia
  3. M34.2
    Systemic sclerosis induced by drug and chemical
    Billable
    Code first 1, Use additional code 1

    Code first

    • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4) T36 T65

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  4. M34.8
    Other forms of systemic sclerosis
    Header
  5. M34.81
    Systemic sclerosis with lung involvement
    BillableCC93 278
    Code also 3

    Code also

    • if applicable:
    • other interstitial pulmonary diseases (J84.89) J84.89
    • secondary pulmonary arterial hypertension (I27.21) I27.21
  6. M34.82
    Systemic sclerosis with myopathy
    BillableCC93
  7. M34.83
    Systemic sclerosis with polyneuropathy
    Billable93
  8. M34.89
    Other systemic sclerosis
    Billable93
  9. M34.9
    Systemic sclerosis, unspecified
    Billable93

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At M34

Excludes1

  • circumscribed scleroderma (L94.0) L94.0
  • neonatal scleroderma (P83.88) P83.88

Notes that also apply

Block M30-M36 instructions (Includes 4, Excludes1 1): printed on the block page.

Chapter 13 instructions (Notes 1, Excludes2 10): printed on the chapter 13 page.

Index entries

  • CREST syndrome → M34.1
  • CRST syndrome → M34.1
  • Scleroderma, sclerodermia (acrosclerotic) (diffuse) (generalized) (progressive) (pulmonary) → M34.9-
  • Sclerosis, scleroticprogressive, systemic → M34.0
  • Calcinosis (interstitial) (tumoral) (universalis)with Raynaud's phenomenon, esophageal dysfunction, sclerodactyly, telangiectasia (CREST syndrome) → M34.1
  • Scleroderma, sclerodermia (acrosclerotic) (diffuse) (generalized) (progressive) (pulmonary)systemic → M34.9
  • Sclerosis, scleroticsystemic → M34.9
  • Trophoneurosis NECdisseminated → M34.9
  • Sclerosis, scleroticsystemicprogressive → M34.0
  • Sclerosis, scleroticsystemicdrug-induced → M34.2
  • Sclerosis, scleroticsystemicdue to chemicals NEC → M34.2
  • Myopathyin (due to)scleroderma → M34.82
  • Sclerosis, scleroticsystemicspecified NEC → M34.89
  • Sclerosis, scleroticsystemicwithlung involvement → M34.81
  • Sclerosis, scleroticsystemicwithmyopathy → M34.82
  • Sclerosis, scleroticsystemicwithpolyneuropathy → M34.83
  • Disease, diseasedlunginsystemicsclerosis → M34.81

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy