ICD-10 · PDGM grouping
R94 Abnormal results of function studies
All 23 codes in the R94 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
23
Can lead a claim
0
Cannot lead a claim
23
What CMS assigns to R94
None of the 23 codes is assigned a clinical group. None of the 23 is assigned a comorbidity subgroup. None can lead a claim.
Every code in R94
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 |
|---|---|---|---|---|
| R94.0 Abnormal results of function studies of central nervous system | ||||
| R94.01 | Abnormal electroencephalogram [EEG] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.02 | Abnormal brain scan | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.09 | Abnormal results of other function studies of central nervous systemCMS: Abnormal results of function studies of cnsl | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.1 Abnormal results of function studies of peripheral nervous system and special senses | ||||
| R94.11 Abnormal results of function studies of eye | ||||
| R94.110 | Abnormal electro-oculogram [EOG] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.111 | Abnormal electroretinogram [ERG] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.112 | Abnormal visually evoked potential [VEP] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.113 | Abnormal oculomotor study | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.118 | Abnormal results of other function studies of eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.12 Abnormal results of function studies of ear and other special senses | ||||
| R94.120 | Abnormal auditory function study | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.121 | Abnormal vestibular function study | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.128 | Abnormal results of other function studies of ear and other special sensesCMS: Abn results of function studies of ear and oth sp senses | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.13 Abnormal results of function studies of peripheral nervous system | ||||
| R94.130 | Abnormal response to nerve stimulation, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.131 | Abnormal electromyogram [EMG] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.138 | Abnormal results of other function studies of peripheral nervous systemCMS: Abnormal results of function studies of prph nervous sys | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.2 | Abnormal results of pulmonary function studies | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.3 Abnormal results of cardiovascular function studies | ||||
| R94.30 | Abnormal result of cardiovascular function study, unspecifiedCMS: Abnormal result of cardiovascular function study, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.31 | Abnormal electrocardiogram [ECG] [EKG] | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.39 | Abnormal result of other cardiovascular function study | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.4 | Abnormal results of kidney function studies | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.5 | Abnormal results of liver function studies | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.6 | Abnormal results of thyroid function studies | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.7 | Abnormal results of other endocrine function studies | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| R94.8 | Abnormal results of function studies of other organs and systemsCMS: Abnormal results of function studies of organs and systems | 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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