Skip to main content

T75.89XA ICD-10-CM Code: Other specified effects of external causes, 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 922 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC (MDC 21)
  • MS-DRG 923 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC (MDC 21)

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 specified effects of external causes, initial encounter is a billable ICD-10-CM diagnosis code (T75.89A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T75.89XA in the official ICD-10-CM tabular list.

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.

  • Code also, if applicable, place of occurrence, such as:
  • highway rest stop (Y92.523)
  • school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
  • service areas as the place of occurrence of the external cause (Y92.52-)
  • single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
  • transport vehicle as the place of occurrence of the external cause (Y92.81-)

Frequently Compared Codes

The official Excludes notes on T75.89XA 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 922 (MDC 21), DRG 923 (MDC 21).

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

Clinical classification (AHRQ CCSR):INJ021 — Effect of other external causes, 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.

Related Codes

Same injury, other encounter phase

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

T75.89XD — Other specified effects of external causes, subsequent encounter Compare T75.89XA vs T75.89XD →, T75.89XS — Other specified effects of external causes, sequela Compare T75.89XA vs T75.89XS →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Effect of other external causes, initial encounter).

T73.9XXA — Effect of deprivation, unspecified, initial encounter, T74.A1XA — Adult financial abuse, confirmed, initial encounter, T74.A2XA — Child financial abuse, confirmed, initial encounter, T75.00XA — Unspecified effects of lightning, initial encounter, T75.01XA — Shock due to being struck by lightning, initial encounter, T75.09XA — Other effects of lightning, initial encounter, T75.1XXA — Unspecified effects of drowning and nonfatal submersion, initial encounter, T75.20XA — Unspecified effects of vibration, initial encounter, T75.21XA — Pneumatic hammer syndrome, initial encounter, T75.22XA — Traumatic vasospastic syndrome, initial encounter, T75.23XA — Vertigo from infrasound, initial encounter, T75.29XA — Other effects of vibration, initial encounter, T75.3XXA — Motion sickness, initial encounter, T75.4XXA — Electrocution, initial encounter, T75.81XA — Effects of abnormal gravitation [G] forces, initial encounter, T75.82XA — Effects of weightlessness, initial encounter, T75.830A — Gulf war illness, initial encounter, T75.838A — Effects of other war theater, initial encounter, T76.A1XA — Adult financial abuse, suspected, initial encounter, T76.A2XA — Child financial abuse, suspected, initial encounter, +149 more

Contextual Map

Every relationship of T75.89XA 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]
  • T66-T78 — Other and unspecified effects of external causes [Hierarchy]

Clinical classification (CCSR)

  • INJ021 — Effect of other external causes, initial encounter [CCSR]

Potential MS-DRG

  • DRG 922 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC [MS-DRG]: “OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITH MCC (MDC 21)”
  • DRG 923 — OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC [MS-DRG]: “OTHER INJURY, POISONING AND TOXIC EFFECT DIAGNOSES WITHOUT MCC (MDC 21)”

MDC crossing · procedures (32029)

  • MDC 21 — Injuries, Poisonings and Toxic Effects of Drugs [MDC crossing]: “Injuries, Poisonings and Toxic Effects of Drugs — 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 21, 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 21, 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 21, 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 21, 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 21, the procedure side of this code's crossing.” · check together
  • and 32024 more

Nearest codes (40)

  • T75 — Other and unspecified effects of other external causes [Sibling]
  • T75.22XA — Traumatic vasospastic syndrome, initial encounter [Sibling]
  • T75.22XD — Traumatic vasospastic syndrome, subsequent encounter [Sibling]
  • T75.22XS — Traumatic vasospastic syndrome, sequela [Sibling]
  • T75.23 — Vertigo from infrasound [Sibling]
  • T75.23XA — Vertigo from infrasound, initial encounter [Sibling]
  • T75.23XD — Vertigo from infrasound, subsequent encounter [Sibling]
  • T75.23XS — Vertigo from infrasound, sequela [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T75.89XA require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T75.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T75.89XA in its code family, with their registry titles.

  • T75.830 — Gulf war illness
  • T75.830A — Gulf war illness, initial encounter
  • T75.830D — Gulf war illness, subsequent encounter
  • T75.830S — Gulf war illness, sequela
  • T75.838 — Effects of other war theater
  • T75.838A — Effects of other war theater, initial encounter
  • T75.838D — Effects of other war theater, subsequent encounter
  • T75.838S — Effects of other war theater, sequela
  • T75.89 — Other specified effects of external causes
  • T75.89XD — Other specified effects of external causes, subsequent encounter

View all codes in the T75 family