2027 ICD-10-CM Diagnosis Code T82.09XAOther mechanical complication of heart valve prosthesis, initial encounter

ICD-10-CM Codes›S00–T88›T80-T88›T82

ICD-10-CM T82.09XA
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T82.09XA is a billable ICD-10-CM diagnosis code for other mechanical complication of heart valve prosthesis, 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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 306 through 307. 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 52 closely related codes. Coders also document this condition as prosthetic cardiac valve obstruction. 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
T82.09XA
Billable Status
Yes — Valid for Submission
Code Describes
Other mechanical complication of heart valve prosthesis, initial encounter
Short Description
Mech compl of heart valve prosthesis, initial encounter
Parent Code
T82.09
Other mechanical complication of heart valve prosthesis

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 CodeT82.09XAOther mechanical complication of heart valve prosthesis, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Prosthetic cardiac valve obstruction

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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T82.09XA: its own notes plus those printed at T82.0, T82, block T80-T88, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From T82.0 Mechanical complication of heart valve prosthesis applies to 12 codes
  • mechanical complication of biological heart valve graft (T82.22-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From T82 Complications of cardiac and vascular prosthetic devices, implants and grafts applies to 297 codes
  • failure and rejection of transplanted organs and tissue (T86.-)
From Block T80-T88 Complications of surgical and medical care, not elsewhere classified applies to 1,683 codes
  • any encounters with medical care for postprocedural conditions in which no complications are present, such as:
  • artificial opening status (Z93.-)
  • closure of external stoma (Z43.-)
  • fitting and adjustment of external prosthetic device (Z44.-)
  • burns and corrosions from local applications and irradiation (T20-T32)
  • complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
  • mechanical complication of respirator [ventilator] (J95.850)
  • poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
  • postprocedural fever (R50.82)
  • specified complications classified elsewhere, such as:
  • cerebrospinal fluid leak from spinal puncture (G97.0)
  • colostomy malfunction (K94.0-)
  • disorders of fluid and electrolyte imbalance (E86-E87)
  • functional disturbances following cardiac surgery (I97.0-I97.1)
  • intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
  • ostomy complications (J95.0-, K94.-, N99.5-)
  • postgastric surgery syndromes (K91.1)
  • postlaminectomy syndrome NEC (M96.1)
  • postmastectomy lymphedema syndrome (I97.2)
  • postsurgical blind-loop syndrome (K91.2)
  • ventilator associated pneumonia (J95.851)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block T80-T88 Complications of surgical and medical care, not elsewhere classified applies to 1,683 codes
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • code(s) to identify the specified condition resulting from the complication
  • code to identify devices involved and details of circumstances (Y62-Y82)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

From T82 Complications of cardiac and vascular prosthetic devices, implants and grafts applies to 297 codes
  • The appropriate 7th character is to be added to each code from category T82
Values for category T82 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter this code
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name T82.09XA, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming T82.09XA: they are not reported together with it, unless the two conditions are unrelated.

  • T82.2 Mechanical complication of coronary artery bypass graft and biological heart valve graft
    mechanical complication of artificial heart valve prosthesis (T82.0-) names T82.0-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming T82.09XA: its condition is not part of those codes, and both may be reported when the patient has both.

  • Z95 Presence of cardiac and vascular implants and grafts
    complications of cardiac and vascular devices, implants and grafts (T82.-) names T82.-, which includes this code

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

Patient EducationClinical

Heart Valve Diseases

Heart valve disease happens when one or more of your heart valves don't work well.

The full article covers:

  • What are heart valve diseases?
  • What are the types of heart valve diseases?
  • What causes heart valve diseases?
  • Who is more likely to develop heart valve diseases?
  • What are the symptoms of heart valve diseases?
  • What other problems can heart valve diseases cause?
  • How is heart valve disease diagnosed?
  • What are the treatments for heart valve diseases?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert T82.09XA to ICD-9-CMHistory

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

ICD-9-CM
996.02 Malfunc prosth hrt valve
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About T82.09XAOverview

Is T82.09XA (Other mechanical complication of heart valve prosthesis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other mechanical complication of heart valve prosthesis, initial encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character A in T82.09XA mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for other mechanical complication of heart valve prosthesis, such as an emergency visit or first evaluation.

What MS-DRG does T82.09XA group to?

When other mechanical complication of heart valve prosthesis, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 306, 307, with relative weights from 0.9146 to 1.5457 depending on complications. Higher weights mean higher Medicare reimbursement.

Is T82.09XA a CC or MCC?

CMS lists T82.09XA as a CC (complication or comorbidity) for FY 2027. 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 52 closely related codes in its exclusion list.

Can T82.09XA be reported with a code from T82.22?

Not as a rule. The Excludes1 note at T82.0, which applies to T82.09XA, lists "mechanical complication of biological heart valve graft (T82.22-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).