2026 ICD-10-CM Diagnosis Code T85.621SDisplacement of intraperitoneal dialysis catheter, sequela
T85.621S is a billable ICD-10-CM diagnosis code for displacement 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 malposition of peritoneal dialysis catheter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T85.621S 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.
- Malposition of peritoneal dialysis catheter
- Migration of peritoneal dialysis catheter
- Migration of Tenckhoff catheter
- Misplacement of acute peritoneal dialysis catheter
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.
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Convert T85.621S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T85.621SOverview
Is T85.621S (Displacement of intraperitoneal dialysis catheter) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report displacement of intraperitoneal dialysis catheter, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T85.621S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the displacement of intraperitoneal dialysis catheter itself has resolved, not the original event.
What MS-DRG does T85.621S group to?
When displacement 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 T85.621S 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 displacement of intraperitoneal dialysis catheter, sequela on inpatient claims.
What is the ICD-9 equivalent of T85.621S?
Under the General Equivalence Mappings, displacement 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.
