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ICD-10/S04.71XS

S04.71XS ICD-10-CM Code: Injury of accessory nerve, right side, sequela

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 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)
  • MS-DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)
  • MS-DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)

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.

Official Registry Overview & Definition

Injury of accessory nerve, right side, sequela is a billable ICD-10-CM diagnosis code (S04.71S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S04.71XS in the official ICD-10-CM tabular list.

Includes

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

  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
  • injuries of gum
  • injuries of jaw
  • injuries of oral cavity
  • injuries of palate
  • injuries of periocular area
  • injuries of scalp
  • injuries of temporomandibular joint area
  • injuries of tongue
  • injuries of tooth

Excludes2 — Not Included Here

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

Code First

Underlying conditions that must be sequenced before this code.

  • any associated intracranial injury (S06.-)

Code Also

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

  • any associated:
  • open wound of head (S01.-)
  • skull fracture (S02.-)
  • for any associated infection

Change history

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

Verify Before Coding

  • Billable — reportable as written.

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 S04.71XS 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]
  • S00-S09 — Injuries to the head [Hierarchy]

Referenced by Code Also instructions

  • S01 — Open wound of head [Code Also](via S04.-): “injury of cranial nerve (S04.-)” · check together

Clinical classification (CCSR)

  • INJ073 — Injury, sequela [CCSR]

Potential MS-DRG

  • DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)”
  • DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)”
  • DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC [MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)”

MDC crossing · procedures (8892)

  • 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.”
  • 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 8887 more

Nearest codes (40)

  • S04 — Injury of cranial nerve [Sibling]
  • S04.60 — Injury of acoustic nerve, unspecified side [Sibling]
  • S04.60XA — Injury of acoustic nerve, unspecified side, initial encounter [Sibling]
  • S04.60XD — Injury of acoustic nerve, unspecified side, subsequent encounter [Sibling]
  • S04.60XS — Injury of acoustic nerve, unspecified side, sequela [Sibling]
  • S04.61 — Injury of acoustic nerve, right side [Sibling]
  • S04.61XA — Injury of acoustic nerve, right side, initial encounter [Sibling]
  • S04.61XD — Injury of acoustic nerve, right side, subsequent encounter [Sibling]
  • and 32 more

Referenced by Other Codes

Clinical classification (AHRQ CCSR):INJ073 — Injury, sequela (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)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 091 (MDC 01), DRG 092 (MDC 01), DRG 093 (MDC 01).

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 S04.71XS or its code family.

1 Code Also instructions: S01 (via S04.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S04.71XS require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S04.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S04.71XS in its code family, with their registry titles.

  • S04.70XD — Injury of accessory nerve, unspecified side, subsequent encounter
  • S04.70XS — Injury of accessory nerve, unspecified side, sequela
  • S04.71 — Injury of accessory nerve, right side
  • S04.71XA — Injury of accessory nerve, right side, initial encounter
  • S04.71XD — Injury of accessory nerve, right side, subsequent encounter
  • S04.72 — Injury of accessory nerve, left side
  • S04.72XA — Injury of accessory nerve, left side, initial encounter
  • S04.72XD — Injury of accessory nerve, left side, subsequent encounter
  • S04.72XS — Injury of accessory nerve, left side, sequela
  • S04.8 — Injury of other cranial nerves

View all codes in the S04 family