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S20.92XA ICD-10-CM Code: Blister (nonthermal) of unspecified parts of thorax, 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 606 — MINOR SKIN DISORDERS WITH MCC (MDC 09)
  • MS-DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)
  • 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.

Official Registry Overview & Definition

Blister (nonthermal) of unspecified parts of thorax, initial encounter is a billable ICD-10-CM diagnosis code (S20.92A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S20.92XA 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 S20.92XA 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 5 MS-DRGs: DRG 606 (MDC 09), DRG 607 (MDC 09), 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.

Clinical classification (AHRQ CCSR):INJ017 — Superficial injury; contusion, 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.

Contextual Map

Every relationship of S20.92XA 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)

  • INJ017 — Superficial injury; contusion, initial encounter [CCSR]

Potential MS-DRG

  • DRG 606 — MINOR SKIN DISORDERS WITH MCC [MS-DRG]: “MINOR SKIN DISORDERS WITH MCC (MDC 09)”
  • DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC [MS-DRG]: “MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)”
  • 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 (30333)

  • 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.”
  • 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.”
  • 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 30328 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 S20.92XA 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 S20.92XA in its code family, with their registry titles.

  • S20.91 — Abrasion of unspecified parts of thorax
  • S20.91XA — Abrasion of unspecified parts of thorax, initial encounter
  • S20.91XD — Abrasion of unspecified parts of thorax, subsequent encounter
  • S20.91XS — Abrasion of unspecified parts of thorax, sequela
  • S20.92 — Blister (nonthermal) of unspecified parts of thorax
  • S20.92XD — Blister (nonthermal) of unspecified parts of thorax, subsequent encounter
  • S20.92XS — Blister (nonthermal) of unspecified parts of thorax, sequela
  • S20.94 — External constriction of unspecified parts of thorax
  • S20.94XA — External constriction of unspecified parts of thorax, initial encounter
  • S20.94XD — External constriction of unspecified parts of thorax, subsequent encounter

View all codes in the S20 family