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S20.97XS ICD-10-CM Code: Other superficial bite of unspecified parts of thorax, 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

Other superficial bite of unspecified parts of thorax, sequela is a billable ICD-10-CM diagnosis code (S20.97S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S20.97XS 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

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.

Frequently Compared Codes

The official Excludes notes on S20.97XS 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

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.

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.

S20.97XA — Other superficial bite of unspecified parts of thorax, initial encounter Compare S20.97XS vs S20.97XA →, S20.97XD — Other superficial bite of unspecified parts of thorax, 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 S20.97XS 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]

Clinical classification (CCSR)

  • INJ073 — Injury, sequela [CCSR]

Potential MS-DRG

  • DRG 604 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITH MCC [MS-DRG]: “TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITH MCC (MDC 09)”
  • DRG 605 — TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITHOUT MCC [MS-DRG]: “TRAUMA TO THE SKIN, SUBCUTANEOUS TISSUE AND BREAST WITHOUT MCC (MDC 09)”

MDC crossing · procedures (7376)

  • MDC 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast [MDC crossing]: “Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast — 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.”
  • 0315090 — Bypass Right Axillary Artery to Right Upper Arm Artery with Autologous Venous Tissue, Open Approach [Same-MDC procedure]: “Bypass Right Axillary Artery to Right Upper Arm Artery with Autologous Venous Tissue, Open Approach — grouped in MDC 09, the procedure side of this code's crossing.” · check together
  • 031509W — Bypass Right Axillary Artery to Lower Extremity Vein with Autologous Venous Tissue, Open Approach [Same-MDC procedure]: “Bypass Right Axillary Artery to Lower Extremity Vein with Autologous Venous Tissue, Open Approach — grouped in MDC 09, the procedure side of this code's crossing.” · check together
  • 03150A0 — Bypass Right Axillary Artery to Right Upper Arm Artery with Autologous Arterial Tissue, Open Approach [Same-MDC procedure]: “Bypass Right Axillary Artery to Right Upper Arm Artery with Autologous Arterial Tissue, Open Approach — grouped in MDC 09, the procedure side of this code's crossing.” · check together
  • 03150AW — Bypass Right Axillary Artery to Lower Extremity Vein with Autologous Arterial Tissue, Open Approach [Same-MDC procedure]: “Bypass Right Axillary Artery to Lower Extremity Vein with Autologous Arterial Tissue, Open Approach — grouped in MDC 09, the procedure side of this code's crossing.” · check together
  • 03150J0 — Bypass Right Axillary Artery to Right Upper Arm Artery with Synthetic Substitute, Open Approach [Same-MDC procedure]: “Bypass Right Axillary Artery to Right Upper Arm Artery with Synthetic Substitute, Open Approach — grouped in MDC 09, the procedure side of this code's crossing.” · check together
  • and 7371 more

Nearest codes (40)

  • S20 — Superficial injury of thorax [Sibling]
  • S20.471 — Other superficial bite of right back wall of thorax [Sibling]
  • S20.471A — Other superficial bite of right back wall of thorax, initial encounter [Sibling]
  • S20.471D — Other superficial bite of right back wall of thorax, subsequent encounter [Sibling]
  • S20.471S — Other superficial bite of right back wall of thorax, sequela [Sibling]
  • S20.472 — Other superficial bite of left back wall of thorax [Sibling]
  • S20.472A — Other superficial bite of left back wall of thorax, initial encounter [Sibling]
  • S20.472D — Other superficial bite of left back wall of thorax, subsequent encounter [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S20.97XS require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S20.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S20.97XS in its code family, with their registry titles.

  • S20.95 — Superficial foreign body of unspecified parts of thorax
  • S20.95XA — Superficial foreign body of unspecified parts of thorax, initial encounter
  • S20.95XD — Superficial foreign body of unspecified parts of thorax, subsequent encounter
  • S20.95XS — Superficial foreign body of unspecified parts of thorax, sequela
  • S20.96 — Insect bite (nonvenomous) of unspecified parts of thorax
  • S20.96XA — Insect bite (nonvenomous) of unspecified parts of thorax, initial encounter
  • S20.96XD — Insect bite (nonvenomous) of unspecified parts of thorax, subsequent encounter
  • S20.96XS — Insect bite (nonvenomous) of unspecified parts of thorax, sequela
  • S20.97 — Other superficial bite of unspecified parts of thorax
  • S20.97XA — Other superficial bite of unspecified parts of thorax, initial encounter

View all codes in the S20 family