2026 ICD-10-CM Diagnosis Code T85.691SOther mechanical complication of intraperitoneal dialysis catheter, sequela
T85.691S is a billable ICD-10-CM diagnosis code for other mechanical complication of intraperitoneal dialysis catheter, 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 blocked catheter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T85.691S 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.
- Blocked catheter
- Extrusion of peritoneal dialysis catheter cuff
- Leakage from Tenckhoff catheter
- Leakage of peritoneal dialysis catheter
- Malfunction of peritoneal dialysis catheter
- Obstruction of peritoneal dialysis catheter
- Obstruction of peritoneal dialysis catheter by fibrin formation
- Obstruction of Tenckhoff catheter
- Peritoneal dialysis access failure
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.
Patient EducationClinical
Dialysis
When your kidneys are healthy, they clean your blood. They also make hormones that keep your bones strong and your blood healthy. When your kidneys fail, you need treatment to replace the work your kidneys used to do. Unless you have a kidney transplant, you will need a treatment called dialysis.
Read the full article at MedlinePlus
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Convert T85.691S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T85.691SOverview
Is T85.691S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other mechanical complication of intraperitoneal dialysis catheter, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T85.691S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the other mechanical complication of intraperitoneal dialysis catheter itself has resolved, not the original event.
What MS-DRG does T85.691S group to?
When other mechanical complication of intraperitoneal dialysis catheter, 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 T85.691S 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 mechanical complication of intraperitoneal dialysis catheter, sequela on inpatient claims.
What is the ICD-9 equivalent of T85.691S?
Under the General Equivalence Mappings, other mechanical complication of intraperitoneal dialysis catheter, sequela converts to ICD-9-CM 909.3 (late eff surg/med compl). The mapping is approximate, so confirm the match fits the documentation.
