ICD-10 · PDGM grouping
M00 Pyogenic arthritis
All 97 codes in the M00 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
97
Can lead a claim
65
Cannot lead a claim
32
What CMS assigns to M00
65 of the 97 codes group to Musculoskeletal Rehabilitation; 32 are assigned no clinical group. None of the 97 is assigned a comorbidity subgroup. 65 of the 97 can lead a claim.
Every code in M00
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| M00.0 Staphylococcal arthritis and polyarthritis | ||||
| M00.00 | Staphylococcal arthritis, unspecified joint | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.01 Staphylococcal arthritis, shoulder | ||||
| M00.011 | Staphylococcal arthritis, right shoulder | Can lead a claim | E | None |
| M00.012 | Staphylococcal arthritis, left shoulder | Can lead a claim | E | None |
| M00.019 | Staphylococcal arthritis, unspecified shoulder | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.02 Staphylococcal arthritis, elbow | ||||
| M00.021 | Staphylococcal arthritis, right elbow | Can lead a claim | E | None |
| M00.022 | Staphylococcal arthritis, left elbow | Can lead a claim | E | None |
| M00.029 | Staphylococcal arthritis, unspecified elbow | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.03 Staphylococcal arthritis, wrist | ||||
| M00.031 | Staphylococcal arthritis, right wrist | Can lead a claim | E | None |
| M00.032 | Staphylococcal arthritis, left wrist | Can lead a claim | E | None |
| M00.039 | Staphylococcal arthritis, unspecified wrist | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.04 Staphylococcal arthritis, hand | ||||
| M00.041 | Staphylococcal arthritis, right hand | Can lead a claim | E | None |
| M00.042 | Staphylococcal arthritis, left hand | Can lead a claim | E | None |
| M00.049 | Staphylococcal arthritis, unspecified hand | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.05 Staphylococcal arthritis, hip | ||||
| M00.051 | Staphylococcal arthritis, right hip | Can lead a claim | E | None |
| M00.052 | Staphylococcal arthritis, left hip | Can lead a claim | E | None |
| M00.059 | Staphylococcal arthritis, unspecified hip | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.06 Staphylococcal arthritis, knee | ||||
| M00.061 | Staphylococcal arthritis, right knee | Can lead a claim | E | None |
| M00.062 | Staphylococcal arthritis, left knee | Can lead a claim | E | None |
| M00.069 | Staphylococcal arthritis, unspecified knee | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.07 Staphylococcal arthritis, ankle and foot | ||||
| M00.071 | Staphylococcal arthritis, right ankle and foot | Can lead a claim | E | None |
| M00.072 | Staphylococcal arthritis, left ankle and foot | Can lead a claim | E | None |
| M00.079 | Staphylococcal arthritis, unspecified ankle and foot | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.08 | Staphylococcal arthritis, vertebrae | Can lead a claim | E | None |
| M00.09 | Staphylococcal polyarthritis | Can lead a claim | E | None |
| M00.1 Pneumococcal arthritis and polyarthritis | ||||
| M00.10 | Pneumococcal arthritis, unspecified joint | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.11 Pneumococcal arthritis, shoulder | ||||
| M00.111 | Pneumococcal arthritis, right shoulder | Can lead a claim | E | None |
| M00.112 | Pneumococcal arthritis, left shoulder | Can lead a claim | E | None |
| M00.119 | Pneumococcal arthritis, unspecified shoulder | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.12 Pneumococcal arthritis, elbow | ||||
| M00.121 | Pneumococcal arthritis, right elbow | Can lead a claim | E | None |
| M00.122 | Pneumococcal arthritis, left elbow | Can lead a claim | E | None |
| M00.129 | Pneumococcal arthritis, unspecified elbow | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.13 Pneumococcal arthritis, wrist | ||||
| M00.131 | Pneumococcal arthritis, right wrist | Can lead a claim | E | None |
| M00.132 | Pneumococcal arthritis, left wrist | Can lead a claim | E | None |
| M00.139 | Pneumococcal arthritis, unspecified wrist | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.14 Pneumococcal arthritis, hand | ||||
| M00.141 | Pneumococcal arthritis, right hand | Can lead a claim | E | None |
| M00.142 | Pneumococcal arthritis, left hand | Can lead a claim | E | None |
| M00.149 | Pneumococcal arthritis, unspecified hand | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.15 Pneumococcal arthritis, hip | ||||
| M00.151 | Pneumococcal arthritis, right hip | Can lead a claim | E | None |
| M00.152 | Pneumococcal arthritis, left hip | Can lead a claim | E | None |
| M00.159 | Pneumococcal arthritis, unspecified hip | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.16 Pneumococcal arthritis, knee | ||||
| M00.161 | Pneumococcal arthritis, right knee | Can lead a claim | E | None |
| M00.162 | Pneumococcal arthritis, left knee | Can lead a claim | E | None |
| M00.169 | Pneumococcal arthritis, unspecified knee | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.17 Pneumococcal arthritis, ankle and foot | ||||
| M00.171 | Pneumococcal arthritis, right ankle and foot | Can lead a claim | E | None |
| M00.172 | Pneumococcal arthritis, left ankle and foot | Can lead a claim | E | None |
| M00.179 | Pneumococcal arthritis, unspecified ankle and foot | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.18 | Pneumococcal arthritis, vertebrae | Can lead a claim | E | None |
| M00.19 | Pneumococcal polyarthritis | Can lead a claim | E | None |
| M00.2 Other streptococcal arthritis and polyarthritis | ||||
| M00.20 | Other streptococcal arthritis, unspecified joint | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.21 Other streptococcal arthritis, shoulder | ||||
| M00.211 | Other streptococcal arthritis, right shoulder | Can lead a claim | E | None |
| M00.212 | Other streptococcal arthritis, left shoulder | Can lead a claim | E | None |
| M00.219 | Other streptococcal arthritis, unspecified shoulder | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.22 Other streptococcal arthritis, elbow | ||||
| M00.221 | Other streptococcal arthritis, right elbow | Can lead a claim | E | None |
| M00.222 | Other streptococcal arthritis, left elbow | Can lead a claim | E | None |
| M00.229 | Other streptococcal arthritis, unspecified elbow | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.23 Other streptococcal arthritis, wrist | ||||
| M00.231 | Other streptococcal arthritis, right wrist | Can lead a claim | E | None |
| M00.232 | Other streptococcal arthritis, left wrist | Can lead a claim | E | None |
| M00.239 | Other streptococcal arthritis, unspecified wrist | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.24 Other streptococcal arthritis, hand | ||||
| M00.241 | Other streptococcal arthritis, right hand | Can lead a claim | E | None |
| M00.242 | Other streptococcal arthritis, left hand | Can lead a claim | E | None |
| M00.249 | Other streptococcal arthritis, unspecified hand | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.25 Other streptococcal arthritis, hip | ||||
| M00.251 | Other streptococcal arthritis, right hip | Can lead a claim | E | None |
| M00.252 | Other streptococcal arthritis, left hip | Can lead a claim | E | None |
| M00.259 | Other streptococcal arthritis, unspecified hip | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.26 Other streptococcal arthritis, knee | ||||
| M00.261 | Other streptococcal arthritis, right knee | Can lead a claim | E | None |
| M00.262 | Other streptococcal arthritis, left knee | Can lead a claim | E | None |
| M00.269 | Other streptococcal arthritis, unspecified knee | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.27 Other streptococcal arthritis, ankle and foot | ||||
| M00.271 | Other streptococcal arthritis, right ankle and foot | Can lead a claim | E | None |
| M00.272 | Other streptococcal arthritis, left ankle and foot | Can lead a claim | E | None |
| M00.279 | Other streptococcal arthritis, unspecified ankle and foot | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.28 | Other streptococcal arthritis, vertebrae | Can lead a claim | E | None |
| M00.29 | Other streptococcal polyarthritis | Can lead a claim | E | None |
| M00.8 Arthritis and polyarthritis due to other bacteria | ||||
| M00.80 | Arthritis due to other bacteria, unspecified joint | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.81 Arthritis due to other bacteria, shoulder | ||||
| M00.811 | Arthritis due to other bacteria, right shoulder | Can lead a claim | E | None |
| M00.812 | Arthritis due to other bacteria, left shoulder | Can lead a claim | E | None |
| M00.819 | Arthritis due to other bacteria, unspecified shoulder | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.82 Arthritis due to other bacteria, elbow | ||||
| M00.821 | Arthritis due to other bacteria, right elbow | Can lead a claim | E | None |
| M00.822 | Arthritis due to other bacteria, left elbow | Can lead a claim | E | None |
| M00.829 | Arthritis due to other bacteria, unspecified elbow | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.83 Arthritis due to other bacteria, wrist | ||||
| M00.831 | Arthritis due to other bacteria, right wrist | Can lead a claim | E | None |
| M00.832 | Arthritis due to other bacteria, left wrist | Can lead a claim | E | None |
| M00.839 | Arthritis due to other bacteria, unspecified wrist | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.84 Arthritis due to other bacteria, hand | ||||
| M00.841 | Arthritis due to other bacteria, right hand | Can lead a claim | E | None |
| M00.842 | Arthritis due to other bacteria, left hand | Can lead a claim | E | None |
| M00.849 | Arthritis due to other bacteria, unspecified hand | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.85 Arthritis due to other bacteria, hip | ||||
| M00.851 | Arthritis due to other bacteria, right hip | Can lead a claim | E | None |
| M00.852 | Arthritis due to other bacteria, left hip | Can lead a claim | E | None |
| M00.859 | Arthritis due to other bacteria, unspecified hip | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.86 Arthritis due to other bacteria, knee | ||||
| M00.861 | Arthritis due to other bacteria, right knee | Can lead a claim | E | None |
| M00.862 | Arthritis due to other bacteria, left knee | Can lead a claim | E | None |
| M00.869 | Arthritis due to other bacteria, unspecified knee | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.87 Arthritis due to other bacteria, ankle and foot | ||||
| M00.871 | Arthritis due to other bacteria, right ankle and foot | Can lead a claim | E | None |
| M00.872 | Arthritis due to other bacteria, left ankle and foot | Can lead a claim | E | None |
| M00.879 | Arthritis due to other bacteria, unspecified ankle and foot | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M00.88 | Arthritis due to other bacteria, vertebrae | Can lead a claim | E | None |
| M00.89 | Polyarthritis due to other bacteria | Can lead a claim | E | None |
| M00.9 | Pyogenic arthritis, unspecified | Can lead a claim | E | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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