DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M01 Direct infections of joint in infectious and parasitic diseases classified elsewhere

  • Header · not billable

M01 is not billable. The category heads 24 billable codes in FY2027, grouped under 1 subdivision.

Index → code

  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)infectious disease NEC → see category M01
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)due to or associated withinfectious disease NEC → see category M01

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M00-M02 Infectious arthropathies (M00-M02)
  3. M01 Direct infections of joint in infectious and parasitic diseases classified elsewhere
Billable codes
24
Subdivisions
1
CC / MCC codes
24 / 0
HCC V28 codes
24
New FY2027
0
Index entries
2

Codes in M01

  1. M01.X
    Direct infection of joint in infectious and parasitic diseases classified elsewhere
    Header
  2. M01.X0
    Direct infection of unspecified joint in infectious and parasitic diseases classified elsewhere
    BillableCC92
  3. M01.X1
    Direct infection of shoulder joint in infectious and parasitic diseases classified elsewhere
    Header
  4. M01.X11
    Direct infection of right shoulder in infectious and parasitic diseases classified elsewhere
    BillableCC92
  5. M01.X12
    Direct infection of left shoulder in infectious and parasitic diseases classified elsewhere
    BillableCC92
  6. M01.X19
    Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhere
    BillableCC92
  7. M01.X2
    Direct infection of elbow in infectious and parasitic diseases classified elsewhere
    Header
  8. M01.X21
    Direct infection of right elbow in infectious and parasitic diseases classified elsewhere
    BillableCC92
  9. M01.X22
    Direct infection of left elbow in infectious and parasitic diseases classified elsewhere
    BillableCC92
  10. M01.X29
    Direct infection of unspecified elbow in infectious and parasitic diseases classified elsewhere
    BillableCC92
  11. M01.X3
    Direct infection of wrist in infectious and parasitic diseases classified elsewhere
    Header
    Inclusion terms 1

    Inclusion terms

    • Direct infection of carpal bones in infectious and parasitic diseases classified elsewhere
  12. M01.X31
    Direct infection of right wrist in infectious and parasitic diseases classified elsewhere
    BillableCC92
  13. M01.X32
    Direct infection of left wrist in infectious and parasitic diseases classified elsewhere
    BillableCC92
  14. M01.X39
    Direct infection of unspecified wrist in infectious and parasitic diseases classified elsewhere
    BillableCC92
  15. M01.X4
    Direct infection of hand in infectious and parasitic diseases classified elsewhere
    Header
    Inclusion terms 1

    Inclusion terms

    • Direct infection of metacarpus and phalanges in infectious and parasitic diseases classified elsewhere
  16. M01.X41
    Direct infection of right hand in infectious and parasitic diseases classified elsewhere
    BillableCC92
  17. M01.X42
    Direct infection of left hand in infectious and parasitic diseases classified elsewhere
    BillableCC92
  18. M01.X49
    Direct infection of unspecified hand in infectious and parasitic diseases classified elsewhere
    BillableCC92
  19. M01.X5
    Direct infection of hip in infectious and parasitic diseases classified elsewhere
    Header
  20. M01.X51
    Direct infection of right hip in infectious and parasitic diseases classified elsewhere
    BillableCC92
  21. M01.X52
    Direct infection of left hip in infectious and parasitic diseases classified elsewhere
    BillableCC92
  22. M01.X59
    Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhere
    BillableCC92
  23. M01.X6
    Direct infection of knee in infectious and parasitic diseases classified elsewhere
    Header
  24. M01.X61
    Direct infection of right knee in infectious and parasitic diseases classified elsewhere
    BillableCC92
  25. M01.X62
    Direct infection of left knee in infectious and parasitic diseases classified elsewhere
    BillableCC92
  26. M01.X69
    Direct infection of unspecified knee in infectious and parasitic diseases classified elsewhere
    BillableCC92
  27. M01.X7
    Direct infection of ankle and foot in infectious and parasitic diseases classified elsewhere
    Header
    Inclusion terms 1

    Inclusion terms

    • Direct infection of tarsus, metatarsus and phalanges in infectious and parasitic diseases classified elsewhere
  28. M01.X71
    Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhere
    BillableCC92
  29. M01.X72
    Direct infection of left ankle and foot in infectious and parasitic diseases classified elsewhere
    BillableCC92
  30. M01.X79
    Direct infection of unspecified ankle and foot in infectious and parasitic diseases classified elsewhere
    BillableCC92
  31. M01.X8
    Direct infection of vertebrae in infectious and parasitic diseases classified elsewhere
    BillableCC92
  32. M01.X9
    Direct infection of multiple joints in infectious and parasitic diseases classified elsewhere
    BillableCC92

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 M01

Excludes1

  • arthropathy in Lyme disease (A69.23) A69.23
  • gonococcal arthritis (A54.42) A54.42
  • meningococcal arthritis (A39.83) A39.83
  • mumps arthritis (B26.85) B26.85
  • postinfective arthropathy (M02.-) M02
  • postmeningococcal arthritis (A39.84) A39.84
  • reactive arthritis (M02.3) M02.3
  • rubella arthritis (B06.82) B06.82
  • sarcoidosis arthritis (D86.86) D86.86
  • typhoid fever arthritis (A01.04) A01.04
  • tuberculosis arthritis (A18.01-A18.02) A18.01 A18.02

Code first

  • underlying disease, such as:
  • leprosy [Hansen's disease] (A30.-) A30
  • mycoses (B35-B49) B35 B49
  • O'nyong-nyong fever (A92.1) A92.1
  • paratyphoid fever (A01.1-A01.4) A01.1 A01.4

Notes that also apply

Block M00-M02 instructions (Notes 3): printed on the block page.

Instructions for the group M00-M25 (Includes 1): printed on the chapter 13 page.

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

Index entries

  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)due to or associated withinfectious disease NEC → see category M01
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)infectious disease NEC → see category M01

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

Hierarchy