Skip to main content
ICD-10/S31.45XS

S31.45XS ICD-10-CM Code: Open bite of vagina and vulva, 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 604 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITH MCC (MDC 09)
  • MS-DRG 605 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITHOUT MCC (MDC 09)

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

Open bite of vagina and vulva, sequela is a billable ICD-10-CM diagnosis code (S31.45S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S31.45XS in the official ICD-10-CM tabular list.

Includes

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

  • injuries to the abdominal wall
  • injuries to the anus
  • injuries to the buttock
  • injuries to the external genitalia
  • injuries to the flank
  • injuries to the groin

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Bite of vagina and vulva NOS

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

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:
  • spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
  • wound 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.

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 2 MS-DRGs: DRG 604 (MDC 09), DRG 605 (MDC 09).

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 S31.45XS or its code family.

1 Use Additional Code instructions: S38.1 (via S31.-).

5 Code Also instructions: S34 (via S31.-), S35 (via S31.-), S36 (via S31.-), S37 (via S31.-), S39 (via S31.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S31.45XS require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S31.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S31.45XS in its code family, with their registry titles.

  • S31.44XD — Puncture wound with foreign body of vagina and vulva, subsequent encounter
  • S31.44XS — Puncture wound with foreign body of vagina and vulva, sequela
  • S31.45 — Open bite of vagina and vulva
  • S31.45XA — Open bite of vagina and vulva, initial encounter
  • S31.45XD — Open bite of vagina and vulva, subsequent encounter
  • S31.5 — Open wound of unspecified external genital organs
  • S31.50 — Unspecified open wound of unspecified external genital organs
  • S31.501 — Unspecified open wound of unspecified external genital organs, male
  • S31.501A — Unspecified open wound of unspecified external genital organs, male, initial encounter
  • S31.501D — Unspecified open wound of unspecified external genital organs, male, subsequent encounter

View all codes in the S31 family