ICD-10 · PDGM grouping
R76 Other abnormal immunological findings in serum
All 6 codes in the R76 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.
Codes in family
6
Can lead a claim
0
Cannot lead a claim
6
What CMS assigns to R76
None of the 6 codes is assigned a clinical group. None of the 6 is assigned a comorbidity subgroup. None can lead a claim.
Every code in R76
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 |
|---|---|---|---|---|
| R76.0 | Raised antibody titer | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R76.1 Nonspecific reaction to test for tuberculosis | ||||
| R76.11 | Nonspecific reaction to tuberculin skin test without active tuberculosisCMS: Nonspecific reaction to skin test w/o active tuberculosis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R76.12 | Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosisCMS: Nonspec reaction to gamma intrfrn respns w/o actv tubrclosis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R76.8 Other specified abnormal immunological findings in serum | ||||
| R76.81 | Abnormal rheumatoid factor and anti-citrullinated protein antibody without rheumatoid arthritisCMS: Abn rheu fctr /anti-citrul protein antibody w/o rheu arthrit | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R76.89 | Other specified abnormal immunological findings in serum | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R76.9 | Abnormal immunological finding in serum, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | 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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