2026 ICD-10-CM Diagnosis Code T85.890SOther specified complication of nervous system prosthetic devices, implants and grafts, sequela

ICD-10-CM Codes›S00–T88›T80-T88›T85

ICD-10-CM T85.890S
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T85.890S is a billable ICD-10-CM diagnosis code for other specified complication of nervous system 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. Coders also document this condition as chorea due to and following ventriculoperitoneal shunt. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.

Code Identity

ICD-10-CM Code
T85.890S
Billable Status
Yes — Valid for Submission
Code Describes
Other specified complication of nervous system prosthetic devices, implants and grafts, sequela
Short Description
Oth complication of nervous system prosth dev/grft, sequela
Parent Code
T85.890
Other specified complication of nervous system 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
CategoryT85Complications of other internal prosthetic devices, implants and grafts
This CodeT85.890SOther specified complication of nervous system prosthetic devices, implants and grafts, sequela

Present on Admission (POA)Billing

T85.890S 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.

  • Chorea due to and following ventriculoperitoneal shunt

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Complications of other internal prosthetic devices, implants and grafts (T85). 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 INJ076
Complication, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert T85.890S to ICD-9-CMHistory

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

ICD-9-CM
909.3 Late eff surg/med compl
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement T85.890S replaces the following previously assigned code(s):

  • T85.89XS - Oth complication of internal prosth dev/grft, NEC, sequela
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T85.890SOverview

Is T85.890S a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified complication of nervous system 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 T85.890S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the other specified complication of nervous system prosthetic devices, implants and grafts itself has resolved, not the original event.

What MS-DRG does T85.890S group to?

When other specified complication of nervous system 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 T85.890S 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 other specified complication of nervous system prosthetic devices, implants and grafts, sequela on inpatient claims.

What is the ICD-9 equivalent of T85.890S?

Under the General Equivalence Mappings, other specified complication of nervous system 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.