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S15.9XXS ICD-10-CM Code: Injury of unspecified blood vessel at neck level, 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 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)
  • MS-DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)
  • MS-DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)

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 unspecified blood vessel at neck level, sequela is a billable ICD-10-CM diagnosis code (S15.9S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S15.9XXS in the official ICD-10-CM tabular list.

Includes

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

  • injuries of nape
  • injuries of supraclavicular region
  • injuries of throat

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 open wound (S11.-)

Frequently Compared Codes

The official Excludes notes on S15.9XXS name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

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

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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

Relationships & Classification

Other codes that name S15.9XXS or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

1 Excludes1 notes: S09.0 (via S15.-).

1 Use Additional Code instructions: S17 (via S15.-).

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 299 (MDC 05), DRG 300 (MDC 05), DRG 301 (MDC 05).

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

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.

Related Codes

Same injury, other encounter phase

Same injury, coded at a different phase of treatment via the 7th character.

S15.9XXA — Injury of unspecified blood vessel at neck level, initial encounter Compare S15.9XXS vs S15.9XXA →, S15.9XXD — Injury of unspecified blood vessel at neck level, subsequent encounter

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Injury, sequela).

+7578 more

Contextual Map

Every relationship of S15.9XXS 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]
  • S10-S19 — Injuries to the neck [Hierarchy]

Referenced by Excludes1 notes

  • S09.0 — Injury of blood vessels of head, not elsewhere classified [Excludes1](via S15.-): “injury of precerebral blood vessels (S15.-)” · check together

Referenced by Use Additional Code instructions

  • S17 — Crushing injury of neck [Use Additional Code](via S15.-): “injury of blood vessels (S15.-)” · check together

Clinical classification (CCSR)

  • INJ073 — Injury, sequela [CCSR]

Potential MS-DRG

  • DRG 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)”
  • DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)”
  • DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)”

MDC crossing · procedures (17209)

  • MDC 05 — Diseases and Disorders of the Circulatory System [MDC crossing]: “Diseases and Disorders of the Circulatory 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.”
  • 00HE0MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Open Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Open Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 00HE3MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 00HE4MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 015K0ZZ — Destruction of Head and Neck Sympathetic Nerve, Open Approach [Same-MDC procedure]: “Destruction of Head and Neck Sympathetic Nerve, Open Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 015K3ZZ — Destruction of Head and Neck Sympathetic Nerve, Percutaneous Approach [Same-MDC procedure]: “Destruction of Head and Neck Sympathetic Nerve, Percutaneous Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • and 17204 more

Nearest codes (40)

  • S15 — Injury of blood vessels at neck level [Sibling]
  • S15.312A — Minor laceration of left internal jugular vein, initial encounter [Sibling]
  • S15.312D — Minor laceration of left internal jugular vein, subsequent encounter [Sibling]
  • S15.312S — Minor laceration of left internal jugular vein, sequela [Sibling]
  • S15.319 — Minor laceration of unspecified internal jugular vein [Sibling]
  • S15.319A — Minor laceration of unspecified internal jugular vein, initial encounter [Sibling]
  • S15.319D — Minor laceration of unspecified internal jugular vein, subsequent encounter [Sibling]
  • S15.319S — Minor laceration of unspecified internal jugular vein, sequela [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S15.9XXS require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S15.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S15.9XXS in its code family, with their registry titles.

  • S15.399 — Other specified injury of unspecified internal jugular vein
  • S15.399A — Other specified injury of unspecified internal jugular vein, initial encounter
  • S15.399D — Other specified injury of unspecified internal jugular vein, subsequent encounter
  • S15.399S — Other specified injury of unspecified internal jugular vein, sequela
  • S15.8 — Injury of other specified blood vessels at neck level
  • S15.8XXA — Injury of other specified blood vessels at neck level, initial encounter
  • S15.8XXD — Injury of other specified blood vessels at neck level, subsequent encounter
  • S15.8XXS — Injury of other specified blood vessels at neck level, sequela
  • S15.9 — Injury of unspecified blood vessel at neck level
  • S15.9XXA — Injury of unspecified blood vessel at neck level, initial encounter

View all codes in the S15 family