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ICD-10/S24.141A

S24.141A ICD-10-CM Code: Brown-Séquard syndrome at T1 level of thoracic spinal cord, initial encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 052 — SPINAL DISORDERS AND INJURIES WITH CC/MCC (MDC 01)
  • MS-DRG 053 — SPINAL DISORDERS AND INJURIES WITHOUT CC/MCC (MDC 01)
  • MS-DRG 963 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC (MDC 24)
  • MS-DRG 964 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC (MDC 24)
  • MS-DRG 965 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITHOUT CC/MCC (MDC 24)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 182 — Spinal Cord Disorders/Injuries

Other models: CMS-HCC V22 HCC 72

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Official Registry Overview & Definition

Brown-Séquard syndrome at T1 level of thoracic spinal cord, initial encounter is a billable ICD-10-CM diagnosis code (S24.141A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S24.141A in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Code Also

Additional codes that may be required to fully describe the encounter.

  • any associated:
  • fracture of thoracic vertebra (S22.0-)
  • open wound of thorax (S21.-)
  • transient paralysis (R29.5)

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • Billable — reportable as written.
  • MCC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of S24.141A in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
  • S20-S29 — Injuries to the thorax [Hierarchy]

Referenced by Code First instructions

  • R29.5 — Transient paralysis [Code First](via S24.1.-): “any associated spinal cord injury (S14.0, S14.1-, S24.0, S24.1-, S34.0-, S34.1-)” · check together
  • S22 — Fracture of rib(s), sternum and thoracic spine [Code First](via S24.1.-): “, if applicable, spinal cord injury (S24.0-, S24.1-)” · check together

Referenced by Code Also instructions

  • S21 — Open wound of thorax [Code Also](via S24.1.-): “spinal cord injury (S24.0-, S24.1-)” · check together
  • S23.1 — Subluxation and dislocation of thoracic vertebra [Code Also](via S24.1.-): “spinal cord injury (S24.0-, S24.1-)” · check together
  • S31 — Open wound of abdomen, lower back, pelvis and external genitals [Code Also](via S24.1.-): “spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)” · check together
  • S33.1 — Subluxation and dislocation of lumbar vertebra [Code Also](via S24.1.-): “spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)” · check together

Clinical classification (CCSR)

  • INJ009 — Spinal cord injury (SCI), initial encounter [CCSR]

Risk adjustment (CMS-HCC)

  • HCC 182 — Spinal Cord Disorders/Injuries [CMS-HCC]

Potential MS-DRG

  • MCC — Major Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (MCC). Not counted when the stay groups to DRGs 957-959 (Other O.R. Procedures for Multiple Significant Trauma); DRGs 963-965 (Other Multiple Significant Trauma).”
  • DRG 052 — SPINAL DISORDERS AND INJURIES WITH CC/MCC [MS-DRG]: “SPINAL DISORDERS AND INJURIES WITH CC/MCC (MDC 01)”
  • DRG 053 — SPINAL DISORDERS AND INJURIES WITHOUT CC/MCC [MS-DRG]: “SPINAL DISORDERS AND INJURIES WITHOUT CC/MCC (MDC 01)”
  • DRG 963 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC [MS-DRG]: “OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC (MDC 24)”
  • DRG 964 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC [MS-DRG]: “OTHER MULTIPLE SIGNIFICANT TRAUMA WITH CC (MDC 24)”
  • DRG 965 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITHOUT CC/MCC [MS-DRG]: “OTHER MULTIPLE SIGNIFICANT TRAUMA WITHOUT CC/MCC (MDC 24)”

MDC crossing · procedures (31849)

  • MDC 01 — Diseases and Disorders of the Nervous System [MDC crossing]: “Diseases and Disorders of the Nervous System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • MDC 24 — Multiple Significant Trauma [MDC crossing]: “Multiple Significant Trauma — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 0016070 — Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Nasopharynx with Autologous Tissue Substitute, Open Approach — grouped in MDC 01, the procedure side of this code's crossing.” · check together
  • 0016071 — Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Mastoid Sinus with Autologous Tissue Substitute, Open Approach — grouped in MDC 01, the procedure side of this code's crossing.” · check together
  • 0016072 — Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Atrium with Autologous Tissue Substitute, Open Approach — grouped in MDC 01, the procedure side of this code's crossing.” · check together
  • 0016073 — Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Blood Vessel with Autologous Tissue Substitute, Open Approach — grouped in MDC 01, the procedure side of this code's crossing.” · check together
  • 0016074 — Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach [Same-MDC procedure]: “Bypass Cerebral Ventricle to Pleural Cavity with Autologous Tissue Substitute, Open Approach — grouped in MDC 01, the procedure side of this code's crossing.” · check together
  • and 31844 more

Index entries

  • Injury, spinal (cord), thoracic, Brown-Séquard syndrome, T1 level[Index term]

Nearest codes (40)

  • S24 — Injury of nerves and spinal cord at thorax level [Sibling]
  • S24.131D — Anterior cord syndrome at T1 level of thoracic spinal cord, subsequent encounter [Sibling]
  • S24.131S — Anterior cord syndrome at T1 level of thoracic spinal cord, sequela [Sibling]
  • S24.132 — Anterior cord syndrome at T2-T6 level of thoracic spinal cord [Sibling]
  • S24.132A — Anterior cord syndrome at T2-T6 level of thoracic spinal cord, initial encounter [Sibling]
  • S24.132D — Anterior cord syndrome at T2-T6 level of thoracic spinal cord, subsequent encounter [Sibling]
  • S24.132S — Anterior cord syndrome at T2-T6 level of thoracic spinal cord, sequela [Sibling]
  • S24.133 — Anterior cord syndrome at T7-T10 level of thoracic spinal cord [Sibling]
  • and 32 more

Referenced by Other Codes

Clinical classification (AHRQ CCSR):INJ009 — Spinal cord injury (SCI), initial encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

MCC — Major Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 379 clinically related codes on its CMS exclusion list. Does not count toward severity when the stay groups to DRGs 957-959 (Other O.R. Procedures for Multiple Significant Trauma); DRGs 963-965 (Other Multiple Significant Trauma).

Named in the grouper logic of 5 MS-DRGs: DRG 052 (MDC 01), DRG 053 (MDC 01), DRG 963 (MDC 24), DRG 964 (MDC 24), DRG 965 (MDC 24).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name S24.141A or its code family.

2 Code First instructions across 2 chapters: R29.5 (via S24.1.-), S22 (via S24.1.-).

4 Code Also instructions: S21 (via S24.1.-), S23.1 (via S24.1.-), S31 (via S24.1.-), S33.1 (via S24.1.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S24.141A require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S24.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S24.141A in its code family, with their registry titles.

  • S24.139A — Anterior cord syndrome at unspecified level of thoracic spinal cord, initial encounter
  • S24.139D — Anterior cord syndrome at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.139S — Anterior cord syndrome at unspecified level of thoracic spinal cord, sequela
  • S24.14 — Brown-Séquard syndrome of thoracic spinal cord
  • S24.141 — Brown-Séquard syndrome at T1 level of thoracic spinal cord
  • S24.141D — Brown-Séquard syndrome at T1 level of thoracic spinal cord, subsequent encounter
  • S24.141S — Brown-Séquard syndrome at T1 level of thoracic spinal cord, sequela
  • S24.142 — Brown-Séquard syndrome at T2-T6 level of thoracic spinal cord
  • S24.142A — Brown-Séquard syndrome at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.142D — Brown-Séquard syndrome at T2-T6 level of thoracic spinal cord, subsequent encounter

View all codes in the S24 family

Indexed Clinical Terms (1)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Injury, spinal (cord), thoracic, Brown-Séquard syndrome, T1 level