DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M36 Systemic disorders of connective tissue in diseases classified elsewhere

  • Header · not billable

M36 is not billable. The category heads 6 billable codes in FY2027: the 6 codes directly below it.

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. M36 Systemic disorders of connective tissue in diseases classified elsewhere
Billable codes
6
Subdivisions
6
CC / MCC codes
1 / 0
HCC V28 codes
1
New FY2027
0
Index entries
24

Codes in M36

  1. M36.0
    Dermato(poly)myositis in neoplastic disease
    BillableCC93
    Code first 1

    Code first

    • underlying neoplasm (C00-D49) C00 D49
  2. M36.1
    Arthropathy in neoplastic disease
    Billable
    Code first 4

    Code first

    • underlying neoplasm, such as:
    • leukemia (C91-C95) C91 C95
    • malignant histiocytosis (C96.A) C96.A
    • multiple myeloma (C90.0) C90.0
  3. M36.2
    Hemophilic arthropathy
    Billable
    Inclusion terms 1, Code first 7

    Inclusion terms

    • Hemarthrosis in hemophilic arthropathy

    Code first

    • underlying disease, such as:
    • factor VIII deficiency (D66) D66
    • with vascular defect (D68.0-) D68.0
    • factor IX deficiency (D67) D67
    • hemophilia (classical) (D66) D66
    • hemophilia B (D67) D67
    • hemophilia C (D68.1) D68.1
  4. M36.3
    Arthropathy in other blood disorders
    Billable
    Code first 4

    Code first

    • underlying disease, such as:
    • disease of blood and blood-forming organs, unspecified (D75.9) D75.9
    • other hemoglobinopathies (D58.2) D58.2
    • thalassemia (D56.-) D56
  5. M36.4
    Arthropathy in hypersensitivity reactions classified elsewhere
    Billable
    Code first 3

    Code first

    • underlying disease, such as:
    • Henoch (-Schönlein) purpura (D69.0) D69.0
    • serum sickness (T80.6-) T80.6
  6. M36.8
    Systemic disorders of connective tissue in other diseases classified elsewhere
    Billable
    Code first 4

    Code first

    • underlying disease, such as:
    • alkaptonuria (E70.29) E70.29
    • hypogammaglobulinemia (D80.-) D80
    • ochronosis (E70.29) E70.29

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 M36

Excludes2

  • arthropathies in diseases classified elsewhere (M14.-) M14

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

  • Dermatomyositis (acute) (chronic)in (due to) neoplastic disease → D49.9 [M36.0]
  • Dermatopolymyositisin neoplastic disease → D49.9 [M36.0]
  • Arthropathyhemophilic NEC → D66 [M36.2]
  • Osteoarthrosis (degenerative) (hypertrophic) (joint)deformans alkaptonurica → E70.29 [M36.8]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)multiple myelomatosis → C90.0- [M36.1]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)myelomatosis (multiple) → C90.0- [M36.1]
  • Arthropathyin (due to)multiple myeloma → C90.0- [M36.1]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)leukemia NEC → C95.9- [M36.1]
  • Arthropathyin (due to)leukemia NEC → C95.9- [M36.1]
  • Arthropathyin (due to)malignant histiocytosis → C96.A [M36.1]
  • Arthropathyin (due to)neoplastic disease NOS (see also Neoplasm) → D49.9 [M36.1]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)thalassemia NEC → D56.9 [M36.3]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)hemoglobinopathy NEC → D58.2 [M36.3]
  • Arthropathyin (due to)hemoglobinopathy NEC → D58.2 [M36.3]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)due to or associated withhemophilia → D66 [M36.2]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)hemophilia NEC → D66 [M36.2]
  • Arthropathyin (due to)hemophilia NEC → D66 [M36.2]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)due to or associated withHenoch- (Schönlein) purpura → D69.0 [M36.4]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)Henoch (-Schönlein) purpura → D69.0 [M36.4]
  • Arthropathyin (due to)Henoch-Schönlein purpura → D69.0 [M36.4]
  • Arthropathyin (due to)blood disorder NOS → D75.9 [M36.3]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)hypersensitivity reaction NEC → T78.49 [M36.4]
  • Disease, diseasedconnective tissue, systemic (diffuse)in (due to)hypogammaglobulinemia → D80.1 [M36.8]
  • Disease, diseasedconnective tissue, systemic (diffuse)in (due to)ochronosis → E70.29 [M36.8]

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

Hierarchy