2026 ICD-10-CM Diagnosis Code T82.857SStenosis of other cardiac prosthetic devices, implants and grafts, sequela
T82.857S is a billable ICD-10-CM diagnosis code for stenosis of other cardiac prosthetic devices, implants and grafts, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T82.857S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Aortic valve stenosis with insufficiency
- Calcification of mitral valve
- Coronary graft stenosis
- Disorder of aortic valve prosthesis
- Disorder of mitral valve prosthesis
- Disorder of pulmonary valve prosthesis
- Disorder of tricuspid valve prosthesis
- Mitral stenosis with insufficiency
- Neoaortic valve stenosis
- Neopulmonary valve stenosis
- Postoperative heterotopic calcification
- Postprocedural aortic valve regurgitation
- Postprocedural aortic valve stenosis
- Postprocedural mitral valve regurgitation
- Postprocedural mitral valve stenosis
- Postprocedural pulmonary valve stenosis
- Postprocedural stenosis of tricuspid valve
- Prosthetic aortic valve regurgitation
- Prosthetic aortic valve stenosis
- Prosthetic aortic valve stenosis and regurgitation
- Prosthetic cardiac valve calcification
- Prosthetic mitral valve calcific stenosis
- Prosthetic mitral valve regurgitation
- Prosthetic mitral valve stenosis
- Prosthetic mitral valve stenosis and regurgitation
- Prosthetic pulmonary valve stenosis
- Prosthetic tricuspid valve stenosis
- Vascular graft stenosis
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.
Convert T82.857S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T82.857SOverview
Is T82.857S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report stenosis of other cardiac prosthetic devices, implants and grafts, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T82.857S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the stenosis of other cardiac prosthetic devices, implants and grafts itself has resolved, not the original event.
What MS-DRG does T82.857S group to?
When stenosis of other cardiac prosthetic devices, implants and grafts, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 922, 923, with relative weights from 1.0177 to 1.7494 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T82.857S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for stenosis of other cardiac prosthetic devices, implants and grafts, sequela on inpatient claims.
What is the ICD-9 equivalent of T82.857S?
Under the General Equivalence Mappings, stenosis of other cardiac prosthetic devices, implants and grafts, sequela converts to ICD-9-CM 909.3 (late eff surg/med compl). The mapping is approximate, so confirm the match fits the documentation.
