ICD-10 · PDGM grouping
M01 Direct infections of joint in infectious and parasitic diseases classified elsewhere
All 24 codes in the M01 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
24
Can lead a claim
0
Cannot lead a claim
24
What CMS assigns to M01
None of the 24 codes is assigned a clinical group. None of the 24 is assigned a comorbidity subgroup. None can lead a claim. CMS attaches a code-first note to all 24.
Code first
CMS grouper convention 112, on all 24 codes. Code first:
- O'nyong-nyong fever (A92.1)
- leprosy [Hansen's disease] (A30.-)
- mycoses (B35-B49)
- paratyphoid fever (A01.1-A01.4)
- underlying disease, such as:
Every code in M01
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 |
|---|---|---|---|---|
| M01.X Direct infection of joint in infectious and parasitic diseases classified elsewhere | ||||
| M01.X0 | Direct infection of unspecified joint in infectious and parasitic diseases classified elsewhereCMS: Dir infct of unsp joint in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X1 Direct infection of shoulder joint in infectious and parasitic diseases classified elsewhere | ||||
| M01.X11 | Direct infection of right shoulder in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r shldr in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X12 | Direct infection of left shoulder in infectious and parasitic diseases classified elsewhereCMS: Direct infct of l shldr in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X19 | Direct infection of unspecified shoulder in infectious and parasitic diseases classified elsewhereCMS: Dir infct of unsp shldr in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X2 Direct infection of elbow in infectious and parasitic diseases classified elsewhere | ||||
| M01.X21 | Direct infection of right elbow in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r elbow in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X22 | Direct infection of left elbow in infectious and parasitic diseases classified elsewhereCMS: Direct infct of l elbow in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X29 | Direct infection of unspecified elbow in infectious and parasitic diseases classified elsewhereCMS: Dir infct of unsp elbow in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X3 Direct infection of wrist in infectious and parasitic diseases classified elsewhere | ||||
| M01.X31 | Direct infection of right wrist in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r wrist in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X32 | Direct infection of left wrist in infectious and parasitic diseases classified elsewhereCMS: Direct infct of l wrist in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X39 | Direct infection of unspecified wrist in infectious and parasitic diseases classified elsewhereCMS: Dir infct of unsp wrist in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X4 Direct infection of hand in infectious and parasitic diseases classified elsewhere | ||||
| M01.X41 | Direct infection of right hand in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r hand in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X42 | Direct infection of left hand in infectious and parasitic diseases classified elsewhereCMS: Direct infct of l hand in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X49 | Direct infection of unspecified hand in infectious and parasitic diseases classified elsewhereCMS: Direct infct of unsp hand in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X5 Direct infection of hip in infectious and parasitic diseases classified elsewhere | ||||
| M01.X51 | Direct infection of right hip in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r hip in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X52 | Direct infection of left hip in infectious and parasitic diseases classified elsewhereCMS: Direct infct of left hip in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X59 | Direct infection of unspecified hip in infectious and parasitic diseases classified elsewhereCMS: Direct infct of unsp hip in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X6 Direct infection of knee in infectious and parasitic diseases classified elsewhere | ||||
| M01.X61 | Direct infection of right knee in infectious and parasitic diseases classified elsewhereCMS: Direct infct of r knee in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X62 | Direct infection of left knee in infectious and parasitic diseases classified elsewhereCMS: Direct infct of l knee in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X69 | Direct infection of unspecified knee in infectious and parasitic diseases classified elsewhereCMS: Direct infct of unsp knee in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X7 Direct infection of ankle and foot in infectious and parasitic diseases classified elsewhere | ||||
| M01.X71 | Direct infection of right ankle and foot in infectious and parasitic diseases classified elsewhereCMS: Dir infct of right ank/ft in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X72 | Direct infection of left ankle and foot in infectious and parasitic diseases classified elsewhereCMS: Dir infct of left ank/ft in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X79 | Direct infection of unspecified ankle and foot in infectious and parasitic diseases classified elsewhereCMS: Dir infct of unsp ank/ft in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosisUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| M01.X8 | Direct infection of vertebrae in infectious and parasitic diseases classified elsewhereCMS: Direct infct of verteb in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | None |
| M01.X9 | Direct infection of multiple joints in infectious and parasitic diseases classified elsewhereCMS: Dir infct of mult joints in infec/parastc dis classd elswhr | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | 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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