ICD-10 · PDGM grouping
S84 Injury of nerves at lower leg level
All 45 codes in the S84 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
45
Can lead a claim
24
Cannot lead a claim
21
What CMS assigns to S84
24 of the 45 codes group to Neuro Rehabilitation; 21 are assigned no clinical group. None of the 45 is assigned a comorbidity subgroup. 24 of the 45 can lead a claim.
Every code in S84
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 |
|---|---|---|---|---|
| S84.0 Injury of tibial nerve at lower leg level | ||||
| S84.00 Injury of tibial nerve at lower leg level, unspecified leg | ||||
| S84.00XA | Injury of tibial nerve at lower leg level, unspecified leg, initial encounterCMS: Injury of tibial nerve at lower leg level, unsp leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.00XD | Injury of tibial nerve at lower leg level, unspecified leg, subsequent encounterCMS: Injury of tibial nerve at lower leg level, unsp leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.00XS | Injury of tibial nerve at lower leg level, unspecified leg, sequelaCMS: Injury of tibial nerve at lower leg level, unsp leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.01 Injury of tibial nerve at lower leg level, right leg | ||||
| S84.01XA | Injury of tibial nerve at lower leg level, right leg, initial encounterCMS: Injury of tibial nerve at lower leg level, right leg, init | Can lead a claim | B | None |
| S84.01XD | Injury of tibial nerve at lower leg level, right leg, subsequent encounterCMS: Injury of tibial nerve at lower leg level, right leg, subs | Can lead a claim | B | None |
| S84.01XS | Injury of tibial nerve at lower leg level, right leg, sequelaCMS: Injury of tibial nrv at lower leg level, right leg, sequela | Can lead a claim | B | None |
| S84.02 Injury of tibial nerve at lower leg level, left leg | ||||
| S84.02XA | Injury of tibial nerve at lower leg level, left leg, initial encounterCMS: Injury of tibial nerve at lower leg level, left leg, init | Can lead a claim | B | None |
| S84.02XD | Injury of tibial nerve at lower leg level, left leg, subsequent encounterCMS: Injury of tibial nerve at lower leg level, left leg, subs | Can lead a claim | B | None |
| S84.02XS | Injury of tibial nerve at lower leg level, left leg, sequela | Can lead a claim | B | None |
| S84.1 Injury of peroneal nerve at lower leg level | ||||
| S84.10 Injury of peroneal nerve at lower leg level, unspecified leg | ||||
| S84.10XA | Injury of peroneal nerve at lower leg level, unspecified leg, initial encounterCMS: Injury of peroneal nerve at lower leg level, unsp leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.10XD | Injury of peroneal nerve at lower leg level, unspecified leg, subsequent encounterCMS: Injury of peroneal nerve at lower leg level, unsp leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.10XS | Injury of peroneal nerve at lower leg level, unspecified leg, sequelaCMS: Injury of peroneal nrv at lower leg level, unsp leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.11 Injury of peroneal nerve at lower leg level, right leg | ||||
| S84.11XA | Injury of peroneal nerve at lower leg level, right leg, initial encounterCMS: Injury of peroneal nerve at lower leg level, right leg, init | Can lead a claim | B | None |
| S84.11XD | Injury of peroneal nerve at lower leg level, right leg, subsequent encounterCMS: Injury of peroneal nerve at lower leg level, right leg, subs | Can lead a claim | B | None |
| S84.11XS | Injury of peroneal nerve at lower leg level, right leg, sequelaCMS: Inj peroneal nrv at lower leg level, right leg, sequela | Can lead a claim | B | None |
| S84.12 Injury of peroneal nerve at lower leg level, left leg | ||||
| S84.12XA | Injury of peroneal nerve at lower leg level, left leg, initial encounterCMS: Injury of peroneal nerve at lower leg level, left leg, init | Can lead a claim | B | None |
| S84.12XD | Injury of peroneal nerve at lower leg level, left leg, subsequent encounterCMS: Injury of peroneal nerve at lower leg level, left leg, subs | Can lead a claim | B | None |
| S84.12XS | Injury of peroneal nerve at lower leg level, left leg, sequelaCMS: Injury of peroneal nrv at lower leg level, left leg, sequela | Can lead a claim | B | None |
| S84.2 Injury of cutaneous sensory nerve at lower leg level | ||||
| S84.20 Injury of cutaneous sensory nerve at lower leg level, unspecified leg | ||||
| S84.20XA | Injury of cutaneous sensory nerve at lower leg level, unspecified leg, initial encounterCMS: Inj cutan sensory nerve at lower leg level, unsp leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.20XD | Injury of cutaneous sensory nerve at lower leg level, unspecified leg, subsequent encounterCMS: Inj cutan sensory nerve at lower leg level, unsp leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.20XS | Injury of cutaneous sensory nerve at lower leg level, unspecified leg, sequelaCMS: Inj cutan sensory nerve at low leg level, unsp leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.21 Injury of cutaneous sensory nerve at lower leg level, right leg | ||||
| S84.21XA | Injury of cutaneous sensory nerve at lower leg level, right leg, initial encounterCMS: Inj cutan sensory nerve at lower leg level, right leg, init | Can lead a claim | B | None |
| S84.21XD | Injury of cutaneous sensory nerve at lower leg level, right leg, subsequent encounterCMS: Inj cutan sensory nerve at lower leg level, right leg, subs | Can lead a claim | B | None |
| S84.21XS | Injury of cutaneous sensory nerve at lower leg level, right leg, sequelaCMS: Inj cutan sensory nerve at low leg level, right leg, sequela | Can lead a claim | B | None |
| S84.22 Injury of cutaneous sensory nerve at lower leg level, left leg | ||||
| S84.22XA | Injury of cutaneous sensory nerve at lower leg level, left leg, initial encounterCMS: Inj cutan sensory nerve at lower leg level, left leg, init | Can lead a claim | B | None |
| S84.22XD | Injury of cutaneous sensory nerve at lower leg level, left leg, subsequent encounterCMS: Inj cutan sensory nerve at lower leg level, left leg, subs | Can lead a claim | B | None |
| S84.22XS | Injury of cutaneous sensory nerve at lower leg level, left leg, sequelaCMS: Inj cutan sensory nerve at low leg level, left leg, sequela | Can lead a claim | B | None |
| S84.8 Injury of other nerves at lower leg level | ||||
| S84.80 Injury of other nerves at lower leg level | ||||
| S84.801 Injury of other nerves at lower leg level, right leg | ||||
| S84.801A | Injury of other nerves at lower leg level, right leg, initial encounterCMS: Injury of oth nerves at lower leg level, right leg, init | Can lead a claim | B | None |
| S84.801D | Injury of other nerves at lower leg level, right leg, subsequent encounterCMS: Injury of oth nerves at lower leg level, right leg, subs | Can lead a claim | B | None |
| S84.801S | Injury of other nerves at lower leg level, right leg, sequelaCMS: Injury of oth nerves at lower leg level, right leg, sequela | Can lead a claim | B | None |
| S84.802 Injury of other nerves at lower leg level, left leg | ||||
| S84.802A | Injury of other nerves at lower leg level, left leg, initial encounterCMS: Injury of oth nerves at lower leg level, left leg, init | Can lead a claim | B | None |
| S84.802D | Injury of other nerves at lower leg level, left leg, subsequent encounterCMS: Injury of oth nerves at lower leg level, left leg, subs | Can lead a claim | B | None |
| S84.802S | Injury of other nerves at lower leg level, left leg, sequela | Can lead a claim | B | None |
| S84.809 Injury of other nerves at lower leg level, unspecified leg | ||||
| S84.809A | Injury of other nerves at lower leg level, unspecified leg, initial encounterCMS: Injury of oth nerves at lower leg level, unsp leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.809D | Injury of other nerves at lower leg level, unspecified leg, subsequent encounterCMS: Injury of oth nerves at lower leg level, unsp leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.809S | Injury of other nerves at lower leg level, unspecified leg, sequelaCMS: Injury of other nerves at lower leg level, unsp leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.9 Injury of unspecified nerve at lower leg level | ||||
| S84.90 Injury of unspecified nerve at lower leg level, unspecified leg | ||||
| S84.90XA | Injury of unspecified nerve at lower leg level, unspecified leg, initial encounterCMS: Injury of unsp nerve at lower leg level, unsp leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.90XD | Injury of unspecified nerve at lower leg level, unspecified leg, subsequent encounterCMS: Injury of unsp nerve at lower leg level, unsp leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.90XS | Injury of unspecified nerve at lower leg level, unspecified leg, sequelaCMS: Injury of unsp nerve at lower leg level, unsp leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.91 Injury of unspecified nerve at lower leg level, right leg | ||||
| S84.91XA | Injury of unspecified nerve at lower leg level, right leg, initial encounterCMS: Injury of unsp nerve at lower leg level, right leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.91XD | Injury of unspecified nerve at lower leg level, right leg, subsequent encounterCMS: Injury of unsp nerve at lower leg level, right leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.91XS | Injury of unspecified nerve at lower leg level, right leg, sequelaCMS: Injury of unsp nerve at lower leg level, right leg, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.92 Injury of unspecified nerve at lower leg level, left leg | ||||
| S84.92XA | Injury of unspecified nerve at lower leg level, left leg, initial encounterCMS: Injury of unsp nerve at lower leg level, left leg, init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.92XD | Injury of unspecified nerve at lower leg level, left leg, subsequent encounterCMS: Injury of unsp nerve at lower leg level, left leg, subs | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S84.92XS | Injury of unspecified nerve at lower leg level, left leg, sequelaCMS: Injury of unsp nerve at lower leg level, left leg, 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.
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