DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

M1A Chronic gout

  • Header · not billable
  • Codes take a 7th character

M1A is not billable. The category heads 242 billable codes in FY2027, grouped under 6 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Gout, chronic → M1A.9
  • Gout, chronictophi → M1A.9
  • Gout, chronicidiopathic → M1A.00

Where it sits

  1. Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)
  2. M05-M14 Inflammatory polyarthropathies (M05-M14)
  3. M1A Chronic gout
Billable codes
242
Subdivisions
6
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
57

Codes in M1A

  1. M1A.0
    Idiopathic chronic gout
    Header
    Inclusion terms 2

    Inclusion terms

    • Chronic gouty bursitis
    • Primary chronic gout
  2. M1A.00
    Idiopathic chronic gout, unspecified site +7th: 0 1
    Needs 7th character
  3. M1A.01
    Idiopathic chronic gout, shoulder
    Header
  4. M1A.011
    Idiopathic chronic gout, right shoulder +7th: 0 1
    Needs 7th character
  5. M1A.012
    Idiopathic chronic gout, left shoulder +7th: 0 1
    Needs 7th character
  6. M1A.019
    Idiopathic chronic gout, unspecified shoulder +7th: 0 1
    Needs 7th character
  7. M1A.02
    Idiopathic chronic gout, elbow
    Header
  8. M1A.021
    Idiopathic chronic gout, right elbow +7th: 0 1
    Needs 7th character
  9. M1A.022
    Idiopathic chronic gout, left elbow +7th: 0 1
    Needs 7th character
  10. M1A.029
    Idiopathic chronic gout, unspecified elbow +7th: 0 1
    Needs 7th character
  11. M1A.03
    Idiopathic chronic gout, wrist
    Header
  12. M1A.031
    Idiopathic chronic gout, right wrist +7th: 0 1
    Needs 7th character
  13. M1A.032
    Idiopathic chronic gout, left wrist +7th: 0 1
    Needs 7th character
  14. M1A.039
    Idiopathic chronic gout, unspecified wrist +7th: 0 1
    Needs 7th character
  15. M1A.04
    Idiopathic chronic gout, hand
    Header
  16. M1A.041
    Idiopathic chronic gout, right hand +7th: 0 1
    Needs 7th character
  17. M1A.042
    Idiopathic chronic gout, left hand +7th: 0 1
    Needs 7th character
  18. M1A.049
    Idiopathic chronic gout, unspecified hand +7th: 0 1
    Needs 7th character
  19. M1A.05
    Idiopathic chronic gout, hip
    Header
  20. M1A.051
    Idiopathic chronic gout, right hip +7th: 0 1
    Needs 7th character
  21. M1A.052
    Idiopathic chronic gout, left hip +7th: 0 1
    Needs 7th character
  22. M1A.059
    Idiopathic chronic gout, unspecified hip +7th: 0 1
    Needs 7th character
  23. M1A.06
    Idiopathic chronic gout, knee
    Header
  24. M1A.061
    Idiopathic chronic gout, right knee +7th: 0 1
    Needs 7th character
  25. M1A.062
    Idiopathic chronic gout, left knee +7th: 0 1
    Needs 7th character
  26. M1A.069
    Idiopathic chronic gout, unspecified knee +7th: 0 1
    Needs 7th character
  27. M1A.07
    Idiopathic chronic gout, ankle and foot
    Header
  28. M1A.071
    Idiopathic chronic gout, right ankle and foot +7th: 0 1
    Needs 7th character
  29. M1A.072
    Idiopathic chronic gout, left ankle and foot +7th: 0 1
    Needs 7th character
  30. M1A.079
    Idiopathic chronic gout, unspecified ankle and foot +7th: 0 1
    Needs 7th character
  31. M1A.08
    Idiopathic chronic gout, vertebrae +7th: 0 1
    Needs 7th character
  32. M1A.09
    Idiopathic chronic gout, multiple sites +7th: 0 1
    Needs 7th character
  33. M1A.1
    Lead-induced chronic gout
    Header
    Code first 1

    Code first

    • toxic effects of lead and its compounds (T56.0-) T56.0
  34. M1A.10
    Lead-induced chronic gout, unspecified site +7th: 0 1
    Needs 7th character
  35. M1A.11
    Lead-induced chronic gout, shoulder
    Header
  36. M1A.111
    Lead-induced chronic gout, right shoulder +7th: 0 1
    Needs 7th character
  37. M1A.112
    Lead-induced chronic gout, left shoulder +7th: 0 1
    Needs 7th character
  38. M1A.119
    Lead-induced chronic gout, unspecified shoulder +7th: 0 1
    Needs 7th character
  39. M1A.12
    Lead-induced chronic gout, elbow
    Header
  40. M1A.121
    Lead-induced chronic gout, right elbow +7th: 0 1
    Needs 7th character
  41. M1A.122
    Lead-induced chronic gout, left elbow +7th: 0 1
    Needs 7th character
  42. M1A.129
    Lead-induced chronic gout, unspecified elbow +7th: 0 1
    Needs 7th character
  43. M1A.13
    Lead-induced chronic gout, wrist
    Header
  44. M1A.131
    Lead-induced chronic gout, right wrist +7th: 0 1
    Needs 7th character
  45. M1A.132
    Lead-induced chronic gout, left wrist +7th: 0 1
    Needs 7th character
  46. M1A.139
    Lead-induced chronic gout, unspecified wrist +7th: 0 1
    Needs 7th character
  47. M1A.14
    Lead-induced chronic gout, hand
    Header
  48. M1A.141
    Lead-induced chronic gout, right hand +7th: 0 1
    Needs 7th character
  49. M1A.142
    Lead-induced chronic gout, left hand +7th: 0 1
    Needs 7th character
  50. M1A.149
    Lead-induced chronic gout, unspecified hand +7th: 0 1
    Needs 7th character
  51. M1A.15
    Lead-induced chronic gout, hip
    Header
  52. M1A.151
    Lead-induced chronic gout, right hip +7th: 0 1
    Needs 7th character
  53. M1A.152
    Lead-induced chronic gout, left hip +7th: 0 1
    Needs 7th character
  54. M1A.159
    Lead-induced chronic gout, unspecified hip +7th: 0 1
    Needs 7th character
  55. M1A.16
    Lead-induced chronic gout, knee
    Header
  56. M1A.161
    Lead-induced chronic gout, right knee +7th: 0 1
    Needs 7th character
  57. M1A.162
    Lead-induced chronic gout, left knee +7th: 0 1
    Needs 7th character
  58. M1A.169
    Lead-induced chronic gout, unspecified knee +7th: 0 1
    Needs 7th character
  59. M1A.17
    Lead-induced chronic gout, ankle and foot
    Header
  60. M1A.171
    Lead-induced chronic gout, right ankle and foot +7th: 0 1
    Needs 7th character
  61. M1A.172
    Lead-induced chronic gout, left ankle and foot +7th: 0 1
    Needs 7th character
  62. M1A.179
    Lead-induced chronic gout, unspecified ankle and foot +7th: 0 1
    Needs 7th character
  63. M1A.18
    Lead-induced chronic gout, vertebrae +7th: 0 1
    Needs 7th character
  64. M1A.19
    Lead-induced chronic gout, multiple sites +7th: 0 1
    Needs 7th character
  65. M1A.2
    Drug-induced chronic gout
    Header
    Use additional code 1

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  66. M1A.20
    Drug-induced chronic gout, unspecified site +7th: 0 1
    Needs 7th character
  67. M1A.21
    Drug-induced chronic gout, shoulder
    Header
  68. M1A.211
    Drug-induced chronic gout, right shoulder +7th: 0 1
    Needs 7th character
  69. M1A.212
    Drug-induced chronic gout, left shoulder +7th: 0 1
    Needs 7th character
  70. M1A.219
    Drug-induced chronic gout, unspecified shoulder +7th: 0 1
    Needs 7th character
  71. M1A.22
    Drug-induced chronic gout, elbow
    Header
  72. M1A.221
    Drug-induced chronic gout, right elbow +7th: 0 1
    Needs 7th character
  73. M1A.222
    Drug-induced chronic gout, left elbow +7th: 0 1
    Needs 7th character
  74. M1A.229
    Drug-induced chronic gout, unspecified elbow +7th: 0 1
    Needs 7th character
  75. M1A.23
    Drug-induced chronic gout, wrist
    Header
  76. M1A.231
    Drug-induced chronic gout, right wrist +7th: 0 1
    Needs 7th character
  77. M1A.232
    Drug-induced chronic gout, left wrist +7th: 0 1
    Needs 7th character
  78. M1A.239
    Drug-induced chronic gout, unspecified wrist +7th: 0 1
    Needs 7th character
  79. M1A.24
    Drug-induced chronic gout, hand
    Header
  80. M1A.241
    Drug-induced chronic gout, right hand +7th: 0 1
    Needs 7th character
  81. M1A.242
    Drug-induced chronic gout, left hand +7th: 0 1
    Needs 7th character
  82. M1A.249
    Drug-induced chronic gout, unspecified hand +7th: 0 1
    Needs 7th character
  83. M1A.25
    Drug-induced chronic gout, hip
    Header
  84. M1A.251
    Drug-induced chronic gout, right hip +7th: 0 1
    Needs 7th character
  85. M1A.252
    Drug-induced chronic gout, left hip +7th: 0 1
    Needs 7th character
  86. M1A.259
    Drug-induced chronic gout, unspecified hip +7th: 0 1
    Needs 7th character
  87. M1A.26
    Drug-induced chronic gout, knee
    Header
  88. M1A.261
    Drug-induced chronic gout, right knee +7th: 0 1
    Needs 7th character
  89. M1A.262
    Drug-induced chronic gout, left knee +7th: 0 1
    Needs 7th character
  90. M1A.269
    Drug-induced chronic gout, unspecified knee +7th: 0 1
    Needs 7th character
  91. M1A.27
    Drug-induced chronic gout, ankle and foot
    Header
  92. M1A.271
    Drug-induced chronic gout, right ankle and foot +7th: 0 1
    Needs 7th character
  93. M1A.272
    Drug-induced chronic gout, left ankle and foot +7th: 0 1
    Needs 7th character
  94. M1A.279
    Drug-induced chronic gout, unspecified ankle and foot +7th: 0 1
    Needs 7th character
  95. M1A.28
    Drug-induced chronic gout, vertebrae +7th: 0 1
    Needs 7th character
  96. M1A.29
    Drug-induced chronic gout, multiple sites +7th: 0 1
    Needs 7th character
  97. M1A.3
    Chronic gout due to renal impairment
    Header
    Code first 1

    Code first

    • associated renal disease
  98. M1A.30
    Chronic gout due to renal impairment, unspecified site +7th: 0 1
    Needs 7th character
  99. M1A.31
    Chronic gout due to renal impairment, shoulder
    Header
  100. M1A.311
    Chronic gout due to renal impairment, right shoulder +7th: 0 1
    Needs 7th character
  101. M1A.312
    Chronic gout due to renal impairment, left shoulder +7th: 0 1
    Needs 7th character
  102. M1A.319
    Chronic gout due to renal impairment, unspecified shoulder +7th: 0 1
    Needs 7th character
  103. M1A.32
    Chronic gout due to renal impairment, elbow
    Header
  104. M1A.321
    Chronic gout due to renal impairment, right elbow +7th: 0 1
    Needs 7th character
  105. M1A.322
    Chronic gout due to renal impairment, left elbow +7th: 0 1
    Needs 7th character
  106. M1A.329
    Chronic gout due to renal impairment, unspecified elbow +7th: 0 1
    Needs 7th character
  107. M1A.33
    Chronic gout due to renal impairment, wrist
    Header
  108. M1A.331
    Chronic gout due to renal impairment, right wrist +7th: 0 1
    Needs 7th character
  109. M1A.332
    Chronic gout due to renal impairment, left wrist +7th: 0 1
    Needs 7th character
  110. M1A.339
    Chronic gout due to renal impairment, unspecified wrist +7th: 0 1
    Needs 7th character
  111. M1A.34
    Chronic gout due to renal impairment, hand
    Header
  112. M1A.341
    Chronic gout due to renal impairment, right hand +7th: 0 1
    Needs 7th character
  113. M1A.342
    Chronic gout due to renal impairment, left hand +7th: 0 1
    Needs 7th character
  114. M1A.349
    Chronic gout due to renal impairment, unspecified hand +7th: 0 1
    Needs 7th character
  115. M1A.35
    Chronic gout due to renal impairment, hip
    Header
  116. M1A.351
    Chronic gout due to renal impairment, right hip +7th: 0 1
    Needs 7th character
  117. M1A.352
    Chronic gout due to renal impairment, left hip +7th: 0 1
    Needs 7th character
  118. M1A.359
    Chronic gout due to renal impairment, unspecified hip +7th: 0 1
    Needs 7th character
  119. M1A.36
    Chronic gout due to renal impairment, knee
    Header
  120. M1A.361
    Chronic gout due to renal impairment, right knee +7th: 0 1
    Needs 7th character
  121. M1A.362
    Chronic gout due to renal impairment, left knee +7th: 0 1
    Needs 7th character
  122. M1A.369
    Chronic gout due to renal impairment, unspecified knee +7th: 0 1
    Needs 7th character
  123. M1A.37
    Chronic gout due to renal impairment, ankle and foot
    Header
  124. M1A.371
    Chronic gout due to renal impairment, right ankle and foot +7th: 0 1
    Needs 7th character
  125. M1A.372
    Chronic gout due to renal impairment, left ankle and foot +7th: 0 1
    Needs 7th character
  126. M1A.379
    Chronic gout due to renal impairment, unspecified ankle and foot +7th: 0 1
    Needs 7th character
  127. M1A.38
    Chronic gout due to renal impairment, vertebrae +7th: 0 1
    Needs 7th character
  128. M1A.39
    Chronic gout due to renal impairment, multiple sites +7th: 0 1
    Needs 7th character
  129. M1A.4
    Other secondary chronic gout
    Header
    Code first 1

    Code first

    • associated condition
  130. M1A.40
    Other secondary chronic gout, unspecified site +7th: 0 1
    Needs 7th character
  131. M1A.41
    Other secondary chronic gout, shoulder
    Header
  132. M1A.411
    Other secondary chronic gout, right shoulder +7th: 0 1
    Needs 7th character
  133. M1A.412
    Other secondary chronic gout, left shoulder +7th: 0 1
    Needs 7th character
  134. M1A.419
    Other secondary chronic gout, unspecified shoulder +7th: 0 1
    Needs 7th character
  135. M1A.42
    Other secondary chronic gout, elbow
    Header
  136. M1A.421
    Other secondary chronic gout, right elbow +7th: 0 1
    Needs 7th character
  137. M1A.422
    Other secondary chronic gout, left elbow +7th: 0 1
    Needs 7th character
  138. M1A.429
    Other secondary chronic gout, unspecified elbow +7th: 0 1
    Needs 7th character
  139. M1A.43
    Other secondary chronic gout, wrist
    Header
  140. M1A.431
    Other secondary chronic gout, right wrist +7th: 0 1
    Needs 7th character
  141. M1A.432
    Other secondary chronic gout, left wrist +7th: 0 1
    Needs 7th character
  142. M1A.439
    Other secondary chronic gout, unspecified wrist +7th: 0 1
    Needs 7th character
  143. M1A.44
    Other secondary chronic gout, hand
    Header
  144. M1A.441
    Other secondary chronic gout, right hand +7th: 0 1
    Needs 7th character
  145. M1A.442
    Other secondary chronic gout, left hand +7th: 0 1
    Needs 7th character
  146. M1A.449
    Other secondary chronic gout, unspecified hand +7th: 0 1
    Needs 7th character
  147. M1A.45
    Other secondary chronic gout, hip
    Header
  148. M1A.451
    Other secondary chronic gout, right hip +7th: 0 1
    Needs 7th character
  149. M1A.452
    Other secondary chronic gout, left hip +7th: 0 1
    Needs 7th character
  150. M1A.459
    Other secondary chronic gout, unspecified hip +7th: 0 1
    Needs 7th character
  151. M1A.46
    Other secondary chronic gout, knee
    Header
  152. M1A.461
    Other secondary chronic gout, right knee +7th: 0 1
    Needs 7th character
  153. M1A.462
    Other secondary chronic gout, left knee +7th: 0 1
    Needs 7th character
  154. M1A.469
    Other secondary chronic gout, unspecified knee +7th: 0 1
    Needs 7th character
  155. M1A.47
    Other secondary chronic gout, ankle and foot
    Header
  156. M1A.471
    Other secondary chronic gout, right ankle and foot +7th: 0 1
    Needs 7th character
  157. M1A.472
    Other secondary chronic gout, left ankle and foot +7th: 0 1
    Needs 7th character
  158. M1A.479
    Other secondary chronic gout, unspecified ankle and foot +7th: 0 1
    Needs 7th character
  159. M1A.48
    Other secondary chronic gout, vertebrae +7th: 0 1
    Needs 7th character
  160. M1A.49
    Other secondary chronic gout, multiple sites +7th: 0 1
    Needs 7th character
  161. M1A.9
    Chronic gout, unspecified +7th: 0 1
    Needs 7th character

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At M1A

Excludes1

  • gout NOS (M10.-) M10

Excludes2

  • acute gout (M10.-) M10

Use additional code

  • code to identify:
  • Autonomic neuropathy in diseases classified elsewhere (G99.0) G99.0
  • Calculus of urinary tract in diseases classified elsewhere (N22) N22
  • Cardiomyopathy in diseases classified elsewhere (I43) I43
  • Disorders of external ear in diseases classified elsewhere (H61.1-, H62.8-) H61.1 H62.8
  • Disorders of iris and ciliary body in diseases classified elsewhere (H22) H22
  • Glomerular disorders in diseases classified elsewhere (N08) N08

Notes that also apply

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.

7th characters

7th characters for M1A defined here

The appropriate 7th character is to be added to each code from category M1A

7th characters for M1A
7thMeaning (NCHS)
0without tophus (tophi)
1with tophus (tophi)

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Gout, chronic → M1A.9
  • Gout, chronicidiopathic → M1A.00
  • Gout, chroniclead-induced → M1A.10
  • Gout, chronicdrug-induced → M1A.20
  • Gout, chronicin (due to) renal impairment → M1A.30
  • Gout, chronicsecondary NEC → M1A.40
  • Gout, chronictophi → M1A.9
  • Gout, chronicidiopathicshoulder → M1A.01-
  • Gout, chronicidiopathicelbow → M1A.02-
  • Gout, chronicidiopathicwrist → M1A.03-
  • Gout, chronicidiopathichand joint → M1A.04-
  • Gout, chronicidiopathichip → M1A.05-
  • Gout, chronicidiopathicknee → M1A.06-
  • Gout, chronicidiopathicankle → M1A.07-
  • Gout, chronicidiopathicfoot joint → M1A.07-
  • Gout, chronicidiopathicvertebrae → M1A.08
  • Gout, chronicidiopathicmultiple site → M1A.09
  • Gout, chroniclead-inducedshoulder → M1A.11-
  • Gout, chroniclead-inducedelbow → M1A.12-
  • Gout, chroniclead-inducedwrist → M1A.13-
  • Gout, chroniclead-inducedhand joint → M1A.14-
  • Gout, chroniclead-inducedhip → M1A.15-
  • Gout, chroniclead-inducedknee → M1A.16-
  • Gout, chroniclead-inducedankle → M1A.17-
  • Gout, chroniclead-inducedfoot joint → M1A.17-
  • Gout, chroniclead-inducedvertebrae → M1A.18
  • Gout, chroniclead-inducedmultiple site → M1A.19
  • Gout, chronicdrug-inducedshoulder → M1A.21-
  • Gout, chronicdrug-inducedelbow → M1A.22-
  • Gout, chronicdrug-inducedwrist → M1A.23-
  • Gout, chronicdrug-inducedhand joint → M1A.24-
  • Gout, chronicdrug-inducedhip → M1A.25-
  • Gout, chronicdrug-inducedknee → M1A.26-
  • Gout, chronicdrug-inducedankle → M1A.27-
  • Gout, chronicdrug-inducedfoot joint → M1A.27-
  • Gout, chronicdrug-inducedvertebrae → M1A.28
  • Gout, chronicdrug-inducedmultiple site → M1A.29-
  • Gout, chronicin (due to) renal impairmentshoulder → M1A.31-
  • Gout, chronicin (due to) renal impairmentelbow → M1A.32-
  • Gout, chronicin (due to) renal impairmentwrist → M1A.33-

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

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

Hierarchy