ICD-10 · PDGM grouping
S23 Dislocation and sprain of joints and ligaments of thorax
All 108 codes in the S23 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
108
Can lead a claim
96
Cannot lead a claim
12
What CMS assigns to S23
96 of the 108 codes group to Musculoskeletal Rehabilitation; 12 are assigned no clinical group. None of the 108 is assigned a comorbidity subgroup. 96 of the 108 can lead a claim.
Every code in S23
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 |
|---|---|---|---|---|
| S23.0 Traumatic rupture of thoracic intervertebral disc | ||||
| S23.0XXA | Traumatic rupture of thoracic intervertebral disc, initial encounterCMS: Traumatic rupture of thoracic intervertebral disc, init | Can lead a claim | E | None |
| S23.0XXD | Traumatic rupture of thoracic intervertebral disc, subsequent encounterCMS: Traumatic rupture of thoracic intervertebral disc, subs | Can lead a claim | E | None |
| S23.0XXS | Traumatic rupture of thoracic intervertebral disc, sequela | Can lead a claim | E | None |
| S23.1 Subluxation and dislocation of thoracic vertebra | ||||
| S23.10 Subluxation and dislocation of unspecified thoracic vertebra | ||||
| S23.100 Subluxation of unspecified thoracic vertebra | ||||
| S23.100A | Subluxation of unspecified thoracic vertebra, initial encounterCMS: Subluxation of unspecified thoracic vertebra, init encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.100D | Subluxation of unspecified thoracic vertebra, subsequent encounterCMS: Subluxation of unspecified thoracic vertebra, subs encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.100S | Subluxation of unspecified thoracic vertebra, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.101 Dislocation of unspecified thoracic vertebra | ||||
| S23.101A | Dislocation of unspecified thoracic vertebra, initial encounterCMS: Dislocation of unspecified thoracic vertebra, init encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.101D | Dislocation of unspecified thoracic vertebra, subsequent encounterCMS: Dislocation of unspecified thoracic vertebra, subs encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.101S | Dislocation of unspecified thoracic vertebra, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.11 Subluxation and dislocation of T1/T2 thoracic vertebra | ||||
| S23.110 Subluxation of T1/T2 thoracic vertebra | ||||
| S23.110A | Subluxation of T1/T2 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.110D | Subluxation of T1/T2 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.110S | Subluxation of T1/T2 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.111 Dislocation of T1/T2 thoracic vertebra | ||||
| S23.111A | Dislocation of T1/T2 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.111D | Dislocation of T1/T2 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.111S | Dislocation of T1/T2 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.12 Subluxation and dislocation of T2/T3-T3/T4 thoracic vertebra | ||||
| S23.120 Subluxation of T2/T3 thoracic vertebra | ||||
| S23.120A | Subluxation of T2/T3 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.120D | Subluxation of T2/T3 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.120S | Subluxation of T2/T3 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.121 Dislocation of T2/T3 thoracic vertebra | ||||
| S23.121A | Dislocation of T2/T3 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.121D | Dislocation of T2/T3 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.121S | Dislocation of T2/T3 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.122 Subluxation of T3/T4 thoracic vertebra | ||||
| S23.122A | Subluxation of T3/T4 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.122D | Subluxation of T3/T4 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.122S | Subluxation of T3/T4 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.123 Dislocation of T3/T4 thoracic vertebra | ||||
| S23.123A | Dislocation of T3/T4 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.123D | Dislocation of T3/T4 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.123S | Dislocation of T3/T4 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.13 Subluxation and dislocation of T4/T5-T5/T6 thoracic vertebra | ||||
| S23.130 Subluxation of T4/T5 thoracic vertebra | ||||
| S23.130A | Subluxation of T4/T5 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.130D | Subluxation of T4/T5 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.130S | Subluxation of T4/T5 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.131 Dislocation of T4/T5 thoracic vertebra | ||||
| S23.131A | Dislocation of T4/T5 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.131D | Dislocation of T4/T5 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.131S | Dislocation of T4/T5 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.132 Subluxation of T5/T6 thoracic vertebra | ||||
| S23.132A | Subluxation of T5/T6 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.132D | Subluxation of T5/T6 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.132S | Subluxation of T5/T6 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.133 Dislocation of T5/T6 thoracic vertebra | ||||
| S23.133A | Dislocation of T5/T6 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.133D | Dislocation of T5/T6 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.133S | Dislocation of T5/T6 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.14 Subluxation and dislocation of T6/T7-T7/T8 thoracic vertebra | ||||
| S23.140 Subluxation of T6/T7 thoracic vertebra | ||||
| S23.140A | Subluxation of T6/T7 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.140D | Subluxation of T6/T7 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.140S | Subluxation of T6/T7 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.141 Dislocation of T6/T7 thoracic vertebra | ||||
| S23.141A | Dislocation of T6/T7 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.141D | Dislocation of T6/T7 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.141S | Dislocation of T6/T7 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.142 Subluxation of T7/T8 thoracic vertebra | ||||
| S23.142A | Subluxation of T7/T8 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.142D | Subluxation of T7/T8 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.142S | Subluxation of T7/T8 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.143 Dislocation of T7/T8 thoracic vertebra | ||||
| S23.143A | Dislocation of T7/T8 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.143D | Dislocation of T7/T8 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.143S | Dislocation of T7/T8 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.15 Subluxation and dislocation of T8/T9-T9/T10 thoracic vertebra | ||||
| S23.150 Subluxation of T8/T9 thoracic vertebra | ||||
| S23.150A | Subluxation of T8/T9 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.150D | Subluxation of T8/T9 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.150S | Subluxation of T8/T9 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.151 Dislocation of T8/T9 thoracic vertebra | ||||
| S23.151A | Dislocation of T8/T9 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.151D | Dislocation of T8/T9 thoracic vertebra, subsequent encounter | Can lead a claim | E | None |
| S23.151S | Dislocation of T8/T9 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.152 Subluxation of T9/T10 thoracic vertebra | ||||
| S23.152A | Subluxation of T9/T10 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.152D | Subluxation of T9/T10 thoracic vertebra, subsequent encounterCMS: Subluxation of T9/T10 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.152S | Subluxation of T9/T10 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.153 Dislocation of T9/T10 thoracic vertebra | ||||
| S23.153A | Dislocation of T9/T10 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.153D | Dislocation of T9/T10 thoracic vertebra, subsequent encounterCMS: Dislocation of T9/T10 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.153S | Dislocation of T9/T10 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.16 Subluxation and dislocation of T10/T11-T11/T12 thoracic vertebra | ||||
| S23.160 Subluxation of T10/T11 thoracic vertebra | ||||
| S23.160A | Subluxation of T10/T11 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.160D | Subluxation of T10/T11 thoracic vertebra, subsequent encounterCMS: Subluxation of T10/T11 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.160S | Subluxation of T10/T11 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.161 Dislocation of T10/T11 thoracic vertebra | ||||
| S23.161A | Dislocation of T10/T11 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.161D | Dislocation of T10/T11 thoracic vertebra, subsequent encounterCMS: Dislocation of T10/T11 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.161S | Dislocation of T10/T11 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.162 Subluxation of T11/T12 thoracic vertebra | ||||
| S23.162A | Subluxation of T11/T12 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.162D | Subluxation of T11/T12 thoracic vertebra, subsequent encounterCMS: Subluxation of T11/T12 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.162S | Subluxation of T11/T12 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.163 Dislocation of T11/T12 thoracic vertebra | ||||
| S23.163A | Dislocation of T11/T12 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.163D | Dislocation of T11/T12 thoracic vertebra, subsequent encounterCMS: Dislocation of T11/T12 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.163S | Dislocation of T11/T12 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.17 Subluxation and dislocation of T12/L1 thoracic vertebra | ||||
| S23.170 Subluxation of T12/L1 thoracic vertebra | ||||
| S23.170A | Subluxation of T12/L1 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.170D | Subluxation of T12/L1 thoracic vertebra, subsequent encounterCMS: Subluxation of T12/L1 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.170S | Subluxation of T12/L1 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.171 Dislocation of T12/L1 thoracic vertebra | ||||
| S23.171A | Dislocation of T12/L1 thoracic vertebra, initial encounter | Can lead a claim | E | None |
| S23.171D | Dislocation of T12/L1 thoracic vertebra, subsequent encounterCMS: Dislocation of T12/L1 thoracic vertebra, subs encntr | Can lead a claim | E | None |
| S23.171S | Dislocation of T12/L1 thoracic vertebra, sequela | Can lead a claim | E | None |
| S23.2 Dislocation of other and unspecified parts of thorax | ||||
| S23.20 Dislocation of unspecified part of thorax | ||||
| S23.20XA | Dislocation of unspecified part of thorax, initial encounter | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.20XD | Dislocation of unspecified part of thorax, subsequent encounterCMS: Dislocation of unspecified part of thorax, subs encntr | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.20XS | Dislocation of unspecified part of thorax, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.29 Dislocation of other parts of thorax | ||||
| S23.29XA | Dislocation of other parts of thorax, initial encounter | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.29XD | Dislocation of other parts of thorax, subsequent encounter | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.29XS | Dislocation of other parts of thorax, sequela | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| S23.3 Sprain of ligaments of thoracic spine | ||||
| S23.3XXA | Sprain of ligaments of thoracic spine, initial encounter | Can lead a claim | E | None |
| S23.3XXD | Sprain of ligaments of thoracic spine, subsequent encounter | Can lead a claim | E | None |
| S23.3XXS | Sprain of ligaments of thoracic spine, sequela | Can lead a claim | E | None |
| S23.4 Sprain of ribs and sternum | ||||
| S23.41 Sprain of ribs | ||||
| S23.41XA | Sprain of ribs, initial encounter | Can lead a claim | E | None |
| S23.41XD | Sprain of ribs, subsequent encounter | Can lead a claim | E | None |
| S23.41XS | Sprain of ribs, sequela | Can lead a claim | E | None |
| S23.42 Sprain of sternum | ||||
| S23.421 Sprain of chondrosternal joint | ||||
| S23.421A | Sprain of chondrosternal joint, initial encounter | Can lead a claim | E | None |
| S23.421D | Sprain of chondrosternal joint, subsequent encounter | Can lead a claim | E | None |
| S23.421S | Sprain of chondrosternal joint, sequela | Can lead a claim | E | None |
| S23.428 Other sprain of sternum | ||||
| S23.428A | Other sprain of sternum, initial encounter | Can lead a claim | E | None |
| S23.428D | Other sprain of sternum, subsequent encounter | Can lead a claim | E | None |
| S23.428S | Other sprain of sternum, sequela | Can lead a claim | E | None |
| S23.429 Unspecified sprain of sternum | ||||
| S23.429A | Unspecified sprain of sternum, initial encounter | Can lead a claim | E | None |
| S23.429D | Unspecified sprain of sternum, subsequent encounter | Can lead a claim | E | None |
| S23.429S | Unspecified sprain of sternum, sequela | Can lead a claim | E | None |
| S23.8 Sprain of other specified parts of thorax | ||||
| S23.8XXA | Sprain of other specified parts of thorax, initial encounter | Can lead a claim | E | None |
| S23.8XXD | Sprain of other specified parts of thorax, subsequent encounterCMS: Sprain of other specified parts of thorax, subs encntr | Can lead a claim | E | None |
| S23.8XXS | Sprain of other specified parts of thorax, sequela | Can lead a claim | E | None |
| S23.9 Sprain of unspecified parts of thorax | ||||
| S23.9XXA | Sprain of unspecified parts of thorax, initial encounter | Can lead a claim | E | None |
| S23.9XXD | Sprain of unspecified parts of thorax, subsequent encounter | Can lead a claim | E | None |
| S23.9XXS | Sprain of unspecified parts of thorax, sequela | Can lead a claim | E | 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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