DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M00 Pyogenic arthritis

  • Header · not billable

M00 is not billable. The category heads 97 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • Infection, infected, infective (opportunistic)joint NEC → M00.9
  • Infection, infected, infective (opportunistic)hip (joint) NEC → M00.9
  • Infection, infected, infective (opportunistic)knee (joint) NEC → M00.9

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M00-M02 Infectious arthropathies (M00-M02)
  3. M00 Pyogenic arthritis
Billable codes
97
Subdivisions
5
CC / MCC codes
97 / 0
HCC V28 codes
97
New FY2027
0
Index entries
51

Codes in M00

  1. M00.0
    Staphylococcal arthritis and polyarthritis
    Header
    Use additional code 1

    Use additional code

    • code (B95.61-B95.8) to identify bacterial agent B95.61 B95.8
  2. M00.00
    Staphylococcal arthritis, unspecified joint
    BillableCC92
  3. M00.01
    Staphylococcal arthritis, shoulder
    Header
  4. M00.011
    Staphylococcal arthritis, right shoulder
    BillableCC92
  5. M00.012
    Staphylococcal arthritis, left shoulder
    BillableCC92
  6. M00.019
    Staphylococcal arthritis, unspecified shoulder
    BillableCC92
  7. M00.02
    Staphylococcal arthritis, elbow
    Header
  8. M00.021
    Staphylococcal arthritis, right elbow
    BillableCC92
  9. M00.022
    Staphylococcal arthritis, left elbow
    BillableCC92
  10. M00.029
    Staphylococcal arthritis, unspecified elbow
    BillableCC92
  11. M00.03
    Staphylococcal arthritis, wrist
    Header
    Inclusion terms 1

    Inclusion terms

    • Staphylococcal arthritis of carpal bones
  12. M00.031
    Staphylococcal arthritis, right wrist
    BillableCC92
  13. M00.032
    Staphylococcal arthritis, left wrist
    BillableCC92
  14. M00.039
    Staphylococcal arthritis, unspecified wrist
    BillableCC92
  15. M00.04
    Staphylococcal arthritis, hand
    Header
    Inclusion terms 1

    Inclusion terms

    • Staphylococcal arthritis of metacarpus and phalanges
  16. M00.041
    Staphylococcal arthritis, right hand
    BillableCC92
  17. M00.042
    Staphylococcal arthritis, left hand
    BillableCC92
  18. M00.049
    Staphylococcal arthritis, unspecified hand
    BillableCC92
  19. M00.05
    Staphylococcal arthritis, hip
    Header
  20. M00.051
    Staphylococcal arthritis, right hip
    BillableCC92
  21. M00.052
    Staphylococcal arthritis, left hip
    BillableCC92
  22. M00.059
    Staphylococcal arthritis, unspecified hip
    BillableCC92
  23. M00.06
    Staphylococcal arthritis, knee
    Header
  24. M00.061
    Staphylococcal arthritis, right knee
    BillableCC92
  25. M00.062
    Staphylococcal arthritis, left knee
    BillableCC92
  26. M00.069
    Staphylococcal arthritis, unspecified knee
    BillableCC92
  27. M00.07
    Staphylococcal arthritis, ankle and foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Staphylococcal arthritis, tarsus, metatarsus and phalanges
  28. M00.071
    Staphylococcal arthritis, right ankle and foot
    BillableCC92
  29. M00.072
    Staphylococcal arthritis, left ankle and foot
    BillableCC92
  30. M00.079
    Staphylococcal arthritis, unspecified ankle and foot
    BillableCC92
  31. M00.08
    Staphylococcal arthritis, vertebrae
    BillableCC92
  32. M00.09
    Staphylococcal polyarthritis
    BillableCC92
  33. M00.1
    Pneumococcal arthritis and polyarthritis
    Header
  34. M00.10
    Pneumococcal arthritis, unspecified joint
    BillableCC92
  35. M00.11
    Pneumococcal arthritis, shoulder
    Header
  36. M00.111
    Pneumococcal arthritis, right shoulder
    BillableCC92
  37. M00.112
    Pneumococcal arthritis, left shoulder
    BillableCC92
  38. M00.119
    Pneumococcal arthritis, unspecified shoulder
    BillableCC92
  39. M00.12
    Pneumococcal arthritis, elbow
    Header
  40. M00.121
    Pneumococcal arthritis, right elbow
    BillableCC92
  41. M00.122
    Pneumococcal arthritis, left elbow
    BillableCC92
  42. M00.129
    Pneumococcal arthritis, unspecified elbow
    BillableCC92
  43. M00.13
    Pneumococcal arthritis, wrist
    Header
    Inclusion terms 1

    Inclusion terms

    • Pneumococcal arthritis of carpal bones
  44. M00.131
    Pneumococcal arthritis, right wrist
    BillableCC92
  45. M00.132
    Pneumococcal arthritis, left wrist
    BillableCC92
  46. M00.139
    Pneumococcal arthritis, unspecified wrist
    BillableCC92
  47. M00.14
    Pneumococcal arthritis, hand
    Header
    Inclusion terms 1

    Inclusion terms

    • Pneumococcal arthritis of metacarpus and phalanges
  48. M00.141
    Pneumococcal arthritis, right hand
    BillableCC92
  49. M00.142
    Pneumococcal arthritis, left hand
    BillableCC92
  50. M00.149
    Pneumococcal arthritis, unspecified hand
    BillableCC92
  51. M00.15
    Pneumococcal arthritis, hip
    Header
  52. M00.151
    Pneumococcal arthritis, right hip
    BillableCC92
  53. M00.152
    Pneumococcal arthritis, left hip
    BillableCC92
  54. M00.159
    Pneumococcal arthritis, unspecified hip
    BillableCC92
  55. M00.16
    Pneumococcal arthritis, knee
    Header
  56. M00.161
    Pneumococcal arthritis, right knee
    BillableCC92
  57. M00.162
    Pneumococcal arthritis, left knee
    BillableCC92
  58. M00.169
    Pneumococcal arthritis, unspecified knee
    BillableCC92
  59. M00.17
    Pneumococcal arthritis, ankle and foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Pneumococcal arthritis, tarsus, metatarsus and phalanges
  60. M00.171
    Pneumococcal arthritis, right ankle and foot
    BillableCC92
  61. M00.172
    Pneumococcal arthritis, left ankle and foot
    BillableCC92
  62. M00.179
    Pneumococcal arthritis, unspecified ankle and foot
    BillableCC92
  63. M00.18
    Pneumococcal arthritis, vertebrae
    BillableCC92
  64. M00.19
    Pneumococcal polyarthritis
    BillableCC92
  65. M00.2
    Other streptococcal arthritis and polyarthritis
    Header
    Use additional code 1

    Use additional code

  66. M00.20
    Other streptococcal arthritis, unspecified joint
    BillableCC92
  67. M00.21
    Other streptococcal arthritis, shoulder
    Header
  68. M00.211
    Other streptococcal arthritis, right shoulder
    BillableCC92
  69. M00.212
    Other streptococcal arthritis, left shoulder
    BillableCC92
  70. M00.219
    Other streptococcal arthritis, unspecified shoulder
    BillableCC92
  71. M00.22
    Other streptococcal arthritis, elbow
    Header
  72. M00.221
    Other streptococcal arthritis, right elbow
    BillableCC92
  73. M00.222
    Other streptococcal arthritis, left elbow
    BillableCC92
  74. M00.229
    Other streptococcal arthritis, unspecified elbow
    BillableCC92
  75. M00.23
    Other streptococcal arthritis, wrist
    Header
    Inclusion terms 1

    Inclusion terms

    • Other streptococcal arthritis of carpal bones
  76. M00.231
    Other streptococcal arthritis, right wrist
    BillableCC92
  77. M00.232
    Other streptococcal arthritis, left wrist
    BillableCC92
  78. M00.239
    Other streptococcal arthritis, unspecified wrist
    BillableCC92
  79. M00.24
    Other streptococcal arthritis, hand
    Header
    Inclusion terms 1

    Inclusion terms

    • Other streptococcal arthritis metacarpus and phalanges
  80. M00.241
    Other streptococcal arthritis, right hand
    BillableCC92
  81. M00.242
    Other streptococcal arthritis, left hand
    BillableCC92
  82. M00.249
    Other streptococcal arthritis, unspecified hand
    BillableCC92
  83. M00.25
    Other streptococcal arthritis, hip
    Header
  84. M00.251
    Other streptococcal arthritis, right hip
    BillableCC92
  85. M00.252
    Other streptococcal arthritis, left hip
    BillableCC92
  86. M00.259
    Other streptococcal arthritis, unspecified hip
    BillableCC92
  87. M00.26
    Other streptococcal arthritis, knee
    Header
  88. M00.261
    Other streptococcal arthritis, right knee
    BillableCC92
  89. M00.262
    Other streptococcal arthritis, left knee
    BillableCC92
  90. M00.269
    Other streptococcal arthritis, unspecified knee
    BillableCC92
  91. M00.27
    Other streptococcal arthritis, ankle and foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Other streptococcal arthritis, tarsus, metatarsus and phalanges
  92. M00.271
    Other streptococcal arthritis, right ankle and foot
    BillableCC92
  93. M00.272
    Other streptococcal arthritis, left ankle and foot
    BillableCC92
  94. M00.279
    Other streptococcal arthritis, unspecified ankle and foot
    BillableCC92
  95. M00.28
    Other streptococcal arthritis, vertebrae
    BillableCC92
  96. M00.29
    Other streptococcal polyarthritis
    BillableCC92
  97. M00.8
    Arthritis and polyarthritis due to other bacteria
    Header
    Use additional code 1

    Use additional code

    • code (B96) to identify bacteria B96
  98. M00.80
    Arthritis due to other bacteria, unspecified joint
    BillableCC92
  99. M00.81
    Arthritis due to other bacteria, shoulder
    Header
  100. M00.811
    Arthritis due to other bacteria, right shoulder
    BillableCC92
  101. M00.812
    Arthritis due to other bacteria, left shoulder
    BillableCC92
  102. M00.819
    Arthritis due to other bacteria, unspecified shoulder
    BillableCC92
  103. M00.82
    Arthritis due to other bacteria, elbow
    Header
  104. M00.821
    Arthritis due to other bacteria, right elbow
    BillableCC92
  105. M00.822
    Arthritis due to other bacteria, left elbow
    BillableCC92
  106. M00.829
    Arthritis due to other bacteria, unspecified elbow
    BillableCC92
  107. M00.83
    Arthritis due to other bacteria, wrist
    Header
    Inclusion terms 1

    Inclusion terms

    • Arthritis due to other bacteria, carpal bones
  108. M00.831
    Arthritis due to other bacteria, right wrist
    BillableCC92
  109. M00.832
    Arthritis due to other bacteria, left wrist
    BillableCC92
  110. M00.839
    Arthritis due to other bacteria, unspecified wrist
    BillableCC92
  111. M00.84
    Arthritis due to other bacteria, hand
    Header
    Inclusion terms 1

    Inclusion terms

    • Arthritis due to other bacteria, metacarpus and phalanges
  112. M00.841
    Arthritis due to other bacteria, right hand
    BillableCC92
  113. M00.842
    Arthritis due to other bacteria, left hand
    BillableCC92
  114. M00.849
    Arthritis due to other bacteria, unspecified hand
    BillableCC92
  115. M00.85
    Arthritis due to other bacteria, hip
    Header
  116. M00.851
    Arthritis due to other bacteria, right hip
    BillableCC92
  117. M00.852
    Arthritis due to other bacteria, left hip
    BillableCC92
  118. M00.859
    Arthritis due to other bacteria, unspecified hip
    BillableCC92
  119. M00.86
    Arthritis due to other bacteria, knee
    Header
  120. M00.861
    Arthritis due to other bacteria, right knee
    BillableCC92
  121. M00.862
    Arthritis due to other bacteria, left knee
    BillableCC92
  122. M00.869
    Arthritis due to other bacteria, unspecified knee
    BillableCC92
  123. M00.87
    Arthritis due to other bacteria, ankle and foot
    Header
    Inclusion terms 1

    Inclusion terms

    • Arthritis due to other bacteria, tarsus, metatarsus, and phalanges
  124. M00.871
    Arthritis due to other bacteria, right ankle and foot
    BillableCC92
  125. M00.872
    Arthritis due to other bacteria, left ankle and foot
    BillableCC92
  126. M00.879
    Arthritis due to other bacteria, unspecified ankle and foot
    BillableCC92
  127. M00.88
    Arthritis due to other bacteria, vertebrae
    BillableCC92
  128. M00.89
    Polyarthritis due to other bacteria
    BillableCC92
  129. M00.9
    Pyogenic arthritis, unspecified
    BillableCC92
    Inclusion terms 1

    Inclusion terms

    • Infective arthritis NOS

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 M00

Excludes2

  • infection and inflammatory reaction due to internal joint prosthesis (T84.5-) T84.5

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)staphylococcal → M00.00
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcal → M00.10
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NEC → M00.20
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pyogenic or pyemic (any site except spine) → M00.9
  • Infection, infected, infective (opportunistic)acromioclavicular → M00.9
  • Infection, infected, infective (opportunistic)hip (joint) NEC → M00.9
  • Infection, infected, infective (opportunistic)joint NEC → M00.9
  • Infection, infected, infective (opportunistic)knee (joint) NEC → M00.9
  • Infection, infected, infective (opportunistic)metatarsophalangeal → M00.9
  • Infection, infected, infective (opportunistic)shoulder (joint) NEC → M00.9
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalshoulder → M00.01-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalelbow → M00.02-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalwrist → M00.03-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalhand joint → M00.04-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalhip → M00.05-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalknee → M00.06-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalankle → M00.07-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalvertebra → M00.08
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)staphylococcalmultiple site → M00.09
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalshoulder → M00.11-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalelbow → M00.12-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalwrist → M00.13-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalhand joint → M00.14-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalhip → M00.15-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalknee → M00.16-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalankle → M00.17-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalvertebra → M00.18
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pneumococcalmultiple site → M00.19
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECshoulder → M00.21-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECelbow → M00.22-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECwrist → M00.23-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NEChand joint → M00.24-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NEChip → M00.25-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECknee → M00.26-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECankle → M00.27-
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECvertebra → M00.28
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)streptococcal NECmultiple site → M00.29
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)Hemophilus influenzae → M00.8- [B96.3]
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)pyogenic or pyemic (any site except spine)bacterial NEC → M00.80
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)kneejoint → M00.9

11 more, longer entries are not listed; the search box finds them by word.

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Hierarchy