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T81.9XXD ICD-10-CM Code: Unspecified complication of procedure, subsequent 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.

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

Unspecified complication of procedure, subsequent encounter is a billable ICD-10-CM diagnosis code (T81.9D).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T81.9XXD in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • Use additional code(s) to identify the specified condition resulting from the complication
  • Use additional code to identify devices involved and details of circumstances (Y62-Y82)

Frequently Compared Codes

The official Excludes notes on T81.9XXD 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 T81.9XXD 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 Excludes2 notes: T88 (via T81.-).

1 Code First instructions: J98.51 (via T81.-).

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 949 (MDC 23), DRG 950 (MDC 23).

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

Clinical classification (AHRQ CCSR):INJ072 — Complication of other surgical or medical care, injury, subsequent 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.

T81.9XXA — Unspecified complication of procedure, initial encounter Compare T81.9XXD vs T81.9XXA →, T81.9XXS — Unspecified complication of procedure, sequela

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Complication of other surgical or medical care, injury, subsequent encounter).

T81.69XD — Other acute reaction to foreign substance accidentally left during a procedure, subsequent encounter, T81.710D — Complication of mesenteric artery following a procedure, not elsewhere classified, subsequent encounter, T81.711D — Complication of renal artery following a procedure, not elsewhere classified, subsequent encounter, T81.718D — Complication of other artery following a procedure, not elsewhere classified, subsequent encounter, T81.719D — Complication of unspecified artery following a procedure, not elsewhere classified, subsequent encounter, T81.72XD — Complication of vein following a procedure, not elsewhere classified, subsequent encounter, T81.81XD — Complication of inhalation therapy, subsequent encounter, T81.82XD — Emphysema (subcutaneous) resulting from a procedure, subsequent encounter, T81.83XD — Persistent postprocedural fistula, subsequent encounter, T81.89XD — Other complications of procedures, not elsewhere classified, subsequent encounter, T84.410D — Breakdown (mechanical) of muscle and tendon graft, subsequent encounter, T84.420D — Displacement of muscle and tendon graft, subsequent encounter, T84.490D — Other mechanical complication of muscle and tendon graft, subsequent encounter, T85.01XD — Breakdown (mechanical) of ventricular intracranial (communicating) shunt, subsequent encounter, T85.02XD — Displacement of ventricular intracranial (communicating) shunt, subsequent encounter, T85.03XD — Leakage of ventricular intracranial (communicating) shunt, subsequent encounter, T85.09XD — Other mechanical complication of ventricular intracranial (communicating) shunt, subsequent encounter, T85.110D — Breakdown (mechanical) of implanted electronic neurostimulator of brain electrode (lead), subsequent encounter, T85.111D — Breakdown (mechanical) of implanted electronic neurostimulator of peripheral nerve electrode (lead), subsequent encounter, T85.112D — Breakdown (mechanical) of implanted electronic neurostimulator of spinal cord electrode (lead), subsequent encounter, +209 more

Contextual Map

Every relationship of T81.9XXD 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]
  • T80-T88 — Complications of surgical and medical care, not elsewhere classified [Hierarchy]

Referenced by Excludes2 notes

  • T88 — Other complications of surgical and medical care, not elsewhere classified [Excludes2](via T81.-): “complication following procedure NEC (T81.-)” · check together

Referenced by Code First instructions

  • J98.51 — Mediastinitis [Code First](via T81.-): “underlying condition, if applicable, such as postoperative mediastinitis (T81.-)” · check together

Clinical classification (CCSR)

  • INJ072 — Complication of other surgical or medical care, injury, subsequent encounter [CCSR]

Potential MS-DRG

  • DRG 949 — AFTERCARE WITH CC/MCC [MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”
  • DRG 950 — AFTERCARE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”

MDC crossing · procedures (1235)

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services [MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — 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.”
  • F003GKZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GMZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GPZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GYZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GZZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • and 1230 more

Nearest codes (40)

  • T81 — Complications of procedures, not elsewhere classified [Sibling]
  • T81.710 — Complication of mesenteric artery following a procedure, not elsewhere classified [Sibling]
  • T81.710A — Complication of mesenteric artery following a procedure, not elsewhere classified, initial encounter [Sibling]
  • T81.710D — Complication of mesenteric artery following a procedure, not elsewhere classified, subsequent encounter [Sibling]
  • T81.710S — Complication of mesenteric artery following a procedure, not elsewhere classified, sequela [Sibling]
  • T81.711 — Complication of renal artery following a procedure, not elsewhere classified [Sibling]
  • T81.711A — Complication of renal artery following a procedure, not elsewhere classified, initial encounter [Sibling]
  • T81.711D — Complication of renal artery following a procedure, not elsewhere classified, subsequent encounter [Sibling]
  • and 32 more

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T81.9XXD require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T81.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T81.9XXD in its code family, with their registry titles.

  • T81.83 — Persistent postprocedural fistula
  • T81.83XA — Persistent postprocedural fistula, initial encounter
  • T81.83XD — Persistent postprocedural fistula, subsequent encounter
  • T81.83XS — Persistent postprocedural fistula, sequela
  • T81.89 — Other complications of procedures, not elsewhere classified
  • T81.89XA — Other complications of procedures, not elsewhere classified, initial encounter
  • T81.89XD — Other complications of procedures, not elsewhere classified, subsequent encounter
  • T81.89XS — Other complications of procedures, not elsewhere classified, sequela
  • T81.9 — Unspecified complication of procedure
  • T81.9XXA — Unspecified complication of procedure, initial encounter

View all codes in the T81 family