2026 ICD-10-CM Diagnosis Code T82.817AEmbolism due to cardiac prosthetic devices, implants and grafts, initial encounter

ICD-10-CM Codes›S00–T88›T80-T88›T82

ICD-10-CM T82.817A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T82.817A is a billable ICD-10-CM diagnosis code for embolism due to cardiac prosthetic devices, implants and grafts, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 209 closely related codes. Coders also document this condition as prosthetic cardiac valve component embolism. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of cardiovascular device, implant or graft, initial encounter.

Code Identity

ICD-10-CM Code
T82.817A
Billable Status
Yes — Valid for Submission
Code Describes
Embolism due to cardiac prosthetic devices, implants and grafts, initial encounter
Short Description
Embolism due to cardiac prosth dev/grft, initial encounter
Parent Code
T82.817
Embolism due to cardiac prosthetic devices, implants and grafts

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT80-T88Complications of surgical and medical care, not elsewhere classified
CategoryT82Complications of cardiac and vascular prosthetic devices, implants and grafts
This CodeT82.817AEmbolism due to cardiac prosthetic devices, implants and grafts, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Prosthetic cardiac valve component embolism
  • Thromboembolism from prosthetic heart valve

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Complications of cardiac and vascular prosthetic devices, implants and grafts (T82). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ033
Complication of cardiovascular device, implant or graft, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert T82.817A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
996.71 Comp-heart valve prosth
Approximate The match is approximate rather than exact.
ICD-9-CM
996.72 Comp-oth cardiac device
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T82.817AOverview

Is T82.817A a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report embolism due to cardiac prosthetic devices, implants and grafts, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in T82.817A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for embolism due to cardiac prosthetic devices, implants and grafts, such as an emergency visit or first evaluation.

What MS-DRG does T82.817A group to?

When embolism due to cardiac prosthetic devices, implants and grafts, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

Is T82.817A a CC or MCC?

CMS lists T82.817A as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 209 closely related codes in its exclusion list.

What is the ICD-9 equivalent of T82.817A?

Under the General Equivalence Mappings, embolism due to cardiac prosthetic devices, implants and grafts, initial encounter converts to ICD-9-CM 996.71 (comp-heart valve prosth) and 996.72 (comp-oth cardiac device). The mapping is approximate, so confirm the match fits the documentation.