ICD-10 · PDGM grouping
S64 Injury of nerves at wrist and hand level
All 84 codes in the S64 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
84
Can lead a claim
57
Cannot lead a claim
27
What CMS assigns to S64
57 of the 84 codes group to Neuro Rehabilitation; 27 are assigned no clinical group. None of the 84 is assigned a comorbidity subgroup. 57 of the 84 can lead a claim.
Every code in S64
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 |
|---|---|---|---|---|
| S64.0 Injury of ulnar nerve at wrist and hand level | ||||
| S64.00 Injury of ulnar nerve at wrist and hand level of unspecified arm | ||||
| S64.00XA | Injury of ulnar nerve at wrist and hand level of unspecified arm, initial encounterCMS: Injury of ulnar nerve at wrs/hnd lv of unsp arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.00XD | Injury of ulnar nerve at wrist and hand level of unspecified arm, subsequent encounterCMS: Injury of ulnar nerve at wrs/hnd lv of unsp arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.00XS | Injury of ulnar nerve at wrist and hand level of unspecified arm, sequelaCMS: Injury of ulnar nerve at wrs/hnd lv of unsp arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.01 Injury of ulnar nerve at wrist and hand level of right arm | ||||
| S64.01XA | Injury of ulnar nerve at wrist and hand level of right arm, initial encounterCMS: Injury of ulnar nerve at wrs/hnd lv of right arm, init | Can lead a claim | B | None |
| S64.01XD | Injury of ulnar nerve at wrist and hand level of right arm, subsequent encounterCMS: Injury of ulnar nerve at wrs/hnd lv of right arm, subs | Can lead a claim | B | None |
| S64.01XS | Injury of ulnar nerve at wrist and hand level of right arm, sequelaCMS: Injury of ulnar nerve at wrs/hnd lv of right arm, sequela | Can lead a claim | B | None |
| S64.02 Injury of ulnar nerve at wrist and hand level of left arm | ||||
| S64.02XA | Injury of ulnar nerve at wrist and hand level of left arm, initial encounterCMS: Injury of ulnar nerve at wrs/hnd lv of left arm, init | Can lead a claim | B | None |
| S64.02XD | Injury of ulnar nerve at wrist and hand level of left arm, subsequent encounterCMS: Injury of ulnar nerve at wrs/hnd lv of left arm, subs | Can lead a claim | B | None |
| S64.02XS | Injury of ulnar nerve at wrist and hand level of left arm, sequelaCMS: Injury of ulnar nerve at wrs/hnd lv of left arm, sequela | Can lead a claim | B | None |
| S64.1 Injury of median nerve at wrist and hand level | ||||
| S64.10 Injury of median nerve at wrist and hand level of unspecified arm | ||||
| S64.10XA | Injury of median nerve at wrist and hand level of unspecified arm, initial encounterCMS: Injury of median nerve at wrs/hnd lv of unsp arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.10XD | Injury of median nerve at wrist and hand level of unspecified arm, subsequent encounterCMS: Injury of median nerve at wrs/hnd lv of unsp arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.10XS | Injury of median nerve at wrist and hand level of unspecified arm, sequelaCMS: Injury of median nerve at wrs/hnd lv of unsp arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.11 Injury of median nerve at wrist and hand level of right arm | ||||
| S64.11XA | Injury of median nerve at wrist and hand level of right arm, initial encounterCMS: Injury of median nerve at wrs/hnd lv of right arm, init | Can lead a claim | B | None |
| S64.11XD | Injury of median nerve at wrist and hand level of right arm, subsequent encounterCMS: Injury of median nerve at wrs/hnd lv of right arm, subs | Can lead a claim | B | None |
| S64.11XS | Injury of median nerve at wrist and hand level of right arm, sequelaCMS: Injury of median nerve at wrs/hnd lv of right arm, sequela | Can lead a claim | B | None |
| S64.12 Injury of median nerve at wrist and hand level of left arm | ||||
| S64.12XA | Injury of median nerve at wrist and hand level of left arm, initial encounterCMS: Injury of median nerve at wrs/hnd lv of left arm, init | Can lead a claim | B | None |
| S64.12XD | Injury of median nerve at wrist and hand level of left arm, subsequent encounterCMS: Injury of median nerve at wrs/hnd lv of left arm, subs | Can lead a claim | B | None |
| S64.12XS | Injury of median nerve at wrist and hand level of left arm, sequelaCMS: Injury of median nerve at wrs/hnd lv of left arm, sequela | Can lead a claim | B | None |
| S64.2 Injury of radial nerve at wrist and hand level | ||||
| S64.20 Injury of radial nerve at wrist and hand level of unspecified arm | ||||
| S64.20XA | Injury of radial nerve at wrist and hand level of unspecified arm, initial encounterCMS: Injury of radial nerve at wrs/hnd lv of unsp arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.20XD | Injury of radial nerve at wrist and hand level of unspecified arm, subsequent encounterCMS: Injury of radial nerve at wrs/hnd lv of unsp arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.20XS | Injury of radial nerve at wrist and hand level of unspecified arm, sequelaCMS: Injury of radial nerve at wrs/hnd lv of unsp arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.21 Injury of radial nerve at wrist and hand level of right arm | ||||
| S64.21XA | Injury of radial nerve at wrist and hand level of right arm, initial encounterCMS: Injury of radial nerve at wrs/hnd lv of right arm, init | Can lead a claim | B | None |
| S64.21XD | Injury of radial nerve at wrist and hand level of right arm, subsequent encounterCMS: Injury of radial nerve at wrs/hnd lv of right arm, subs | Can lead a claim | B | None |
| S64.21XS | Injury of radial nerve at wrist and hand level of right arm, sequelaCMS: Injury of radial nerve at wrs/hnd lv of right arm, sequela | Can lead a claim | B | None |
| S64.22 Injury of radial nerve at wrist and hand level of left arm | ||||
| S64.22XA | Injury of radial nerve at wrist and hand level of left arm, initial encounterCMS: Injury of radial nerve at wrs/hnd lv of left arm, init | Can lead a claim | B | None |
| S64.22XD | Injury of radial nerve at wrist and hand level of left arm, subsequent encounterCMS: Injury of radial nerve at wrs/hnd lv of left arm, subs | Can lead a claim | B | None |
| S64.22XS | Injury of radial nerve at wrist and hand level of left arm, sequelaCMS: Injury of radial nerve at wrs/hnd lv of left arm, sequela | Can lead a claim | B | None |
| S64.3 Injury of digital nerve of thumb | ||||
| S64.30 Injury of digital nerve of unspecified thumb | ||||
| S64.30XA | Injury of digital nerve of unspecified thumb, initial encounterCMS: Injury of digital nerve of unspecified thumb, init encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.30XD | Injury of digital nerve of unspecified thumb, subsequent encounterCMS: Injury of digital nerve of unspecified thumb, subs encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.30XS | Injury of digital nerve of unspecified thumb, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.31 Injury of digital nerve of right thumb | ||||
| S64.31XA | Injury of digital nerve of right thumb, initial encounter | Can lead a claim | B | None |
| S64.31XD | Injury of digital nerve of right thumb, subsequent encounter | Can lead a claim | B | None |
| S64.31XS | Injury of digital nerve of right thumb, sequela | Can lead a claim | B | None |
| S64.32 Injury of digital nerve of left thumb | ||||
| S64.32XA | Injury of digital nerve of left thumb, initial encounter | Can lead a claim | B | None |
| S64.32XD | Injury of digital nerve of left thumb, subsequent encounter | Can lead a claim | B | None |
| S64.32XS | Injury of digital nerve of left thumb, sequela | Can lead a claim | B | None |
| S64.4 Injury of digital nerve of other and unspecified finger | ||||
| S64.40 Injury of digital nerve of unspecified finger | ||||
| S64.40XA | Injury of digital nerve of unspecified finger, initial encounterCMS: Injury of digital nerve of unspecified finger, init encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.40XD | Injury of digital nerve of unspecified finger, subsequent encounterCMS: Injury of digital nerve of unspecified finger, subs encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.40XS | Injury of digital nerve of unspecified finger, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.49 Injury of digital nerve of other finger | ||||
| S64.490 Injury of digital nerve of right index finger | ||||
| S64.490A | Injury of digital nerve of right index finger, initial encounterCMS: Injury of digital nerve of right index finger, init encntr | Can lead a claim | B | None |
| S64.490D | Injury of digital nerve of right index finger, subsequent encounterCMS: Injury of digital nerve of right index finger, subs encntr | Can lead a claim | B | None |
| S64.490S | Injury of digital nerve of right index finger, sequela | Can lead a claim | B | None |
| S64.491 Injury of digital nerve of left index finger | ||||
| S64.491A | Injury of digital nerve of left index finger, initial encounterCMS: Injury of digital nerve of left index finger, init encntr | Can lead a claim | B | None |
| S64.491D | Injury of digital nerve of left index finger, subsequent encounterCMS: Injury of digital nerve of left index finger, subs encntr | Can lead a claim | B | None |
| S64.491S | Injury of digital nerve of left index finger, sequela | Can lead a claim | B | None |
| S64.492 Injury of digital nerve of right middle finger | ||||
| S64.492A | Injury of digital nerve of right middle finger, initial encounterCMS: Injury of digital nerve of right middle finger, init encntr | Can lead a claim | B | None |
| S64.492D | Injury of digital nerve of right middle finger, subsequent encounterCMS: Injury of digital nerve of right middle finger, subs encntr | Can lead a claim | B | None |
| S64.492S | Injury of digital nerve of right middle finger, sequela | Can lead a claim | B | None |
| S64.493 Injury of digital nerve of left middle finger | ||||
| S64.493A | Injury of digital nerve of left middle finger, initial encounterCMS: Injury of digital nerve of left middle finger, init encntr | Can lead a claim | B | None |
| S64.493D | Injury of digital nerve of left middle finger, subsequent encounterCMS: Injury of digital nerve of left middle finger, subs encntr | Can lead a claim | B | None |
| S64.493S | Injury of digital nerve of left middle finger, sequela | Can lead a claim | B | None |
| S64.494 Injury of digital nerve of right ring finger | ||||
| S64.494A | Injury of digital nerve of right ring finger, initial encounterCMS: Injury of digital nerve of right ring finger, init encntr | Can lead a claim | B | None |
| S64.494D | Injury of digital nerve of right ring finger, subsequent encounterCMS: Injury of digital nerve of right ring finger, subs encntr | Can lead a claim | B | None |
| S64.494S | Injury of digital nerve of right ring finger, sequela | Can lead a claim | B | None |
| S64.495 Injury of digital nerve of left ring finger | ||||
| S64.495A | Injury of digital nerve of left ring finger, initial encounterCMS: Injury of digital nerve of left ring finger, init encntr | Can lead a claim | B | None |
| S64.495D | Injury of digital nerve of left ring finger, subsequent encounterCMS: Injury of digital nerve of left ring finger, subs encntr | Can lead a claim | B | None |
| S64.495S | Injury of digital nerve of left ring finger, sequela | Can lead a claim | B | None |
| S64.496 Injury of digital nerve of right little finger | ||||
| S64.496A | Injury of digital nerve of right little finger, initial encounterCMS: Injury of digital nerve of right little finger, init encntr | Can lead a claim | B | None |
| S64.496D | Injury of digital nerve of right little finger, subsequent encounterCMS: Injury of digital nerve of right little finger, subs encntr | Can lead a claim | B | None |
| S64.496S | Injury of digital nerve of right little finger, sequela | Can lead a claim | B | None |
| S64.497 Injury of digital nerve of left little finger | ||||
| S64.497A | Injury of digital nerve of left little finger, initial encounterCMS: Injury of digital nerve of left little finger, init encntr | Can lead a claim | B | None |
| S64.497D | Injury of digital nerve of left little finger, subsequent encounterCMS: Injury of digital nerve of left little finger, subs encntr | Can lead a claim | B | None |
| S64.497S | Injury of digital nerve of left little finger, sequela | Can lead a claim | B | None |
| S64.498 Injury of digital nerve of other finger | ||||
| S64.498A | Injury of digital nerve of other finger, initial encounter | Can lead a claim | B | None |
| S64.498D | Injury of digital nerve of other finger, subsequent encounterCMS: Injury of digital nerve of other finger, subs encntr | Can lead a claim | B | None |
| S64.498S | Injury of digital nerve of other finger, sequela | Can lead a claim | B | None |
| S64.8 Injury of other nerves at wrist and hand level | ||||
| S64.8X Injury of other nerves at wrist and hand level | ||||
| S64.8X1 Injury of other nerves at wrist and hand level of right arm | ||||
| S64.8X1A | Injury of other nerves at wrist and hand level of right arm, initial encounterCMS: Injury of nerves at wrist and hand level of right arm, init | Can lead a claim | B | None |
| S64.8X1D | Injury of other nerves at wrist and hand level of right arm, subsequent encounterCMS: Injury of nerves at wrist and hand level of right arm, subs | Can lead a claim | B | None |
| S64.8X1S | Injury of other nerves at wrist and hand level of right arm, sequelaCMS: Injury of nerves at wrs/hnd lv of right arm, sequela | Can lead a claim | B | None |
| S64.8X2 Injury of other nerves at wrist and hand level of left arm | ||||
| S64.8X2A | Injury of other nerves at wrist and hand level of left arm, initial encounterCMS: Injury of nerves at wrist and hand level of left arm, init | Can lead a claim | B | None |
| S64.8X2D | Injury of other nerves at wrist and hand level of left arm, subsequent encounterCMS: Injury of nerves at wrist and hand level of left arm, subs | Can lead a claim | B | None |
| S64.8X2S | Injury of other nerves at wrist and hand level of left arm, sequelaCMS: Injury of nerves at wrs/hnd lv of left arm, sequela | Can lead a claim | B | None |
| S64.8X9 Injury of other nerves at wrist and hand level of unspecified arm | ||||
| S64.8X9A | Injury of other nerves at wrist and hand level of unspecified arm, initial encounterCMS: Injury of nerves at wrist and hand level of unsp arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.8X9D | Injury of other nerves at wrist and hand level of unspecified arm, subsequent encounterCMS: Injury of nerves at wrist and hand level of unsp arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.8X9S | Injury of other nerves at wrist and hand level of unspecified arm, sequelaCMS: Injury of nerves at wrs/hnd lv of unsp arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.9 Injury of unspecified nerve at wrist and hand level | ||||
| S64.90 Injury of unspecified nerve at wrist and hand level of unspecified arm | ||||
| S64.90XA | Injury of unspecified nerve at wrist and hand level of unspecified arm, initial encounterCMS: Injury of unsp nerve at wrs/hnd lv of unsp arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.90XD | Injury of unspecified nerve at wrist and hand level of unspecified arm, subsequent encounterCMS: Injury of unsp nerve at wrs/hnd lv of unsp arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.90XS | Injury of unspecified nerve at wrist and hand level of unspecified arm, sequelaCMS: Injury of unsp nerve at wrs/hnd lv of unsp arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.91 Injury of unspecified nerve at wrist and hand level of right arm | ||||
| S64.91XA | Injury of unspecified nerve at wrist and hand level of right arm, initial encounterCMS: Injury of unsp nerve at wrs/hnd lv of right arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.91XD | Injury of unspecified nerve at wrist and hand level of right arm, subsequent encounterCMS: Injury of unsp nerve at wrs/hnd lv of right arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.91XS | Injury of unspecified nerve at wrist and hand level of right arm, sequelaCMS: Injury of unsp nerve at wrs/hnd lv of right arm, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.92 Injury of unspecified nerve at wrist and hand level of left arm | ||||
| S64.92XA | Injury of unspecified nerve at wrist and hand level of left arm, initial encounterCMS: Injury of unsp nerve at wrs/hnd lv of left arm, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.92XD | Injury of unspecified nerve at wrist and hand level of left arm, subsequent encounterCMS: Injury of unsp nerve at wrs/hnd lv of left arm, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S64.92XS | Injury of unspecified nerve at wrist and hand level of left arm, sequelaCMS: Injury of unsp nerve at wrs/hnd lv of left arm, sequela | 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue