2027 ICD-10-CM Diagnosis Code T85.71XSInfection and inflammatory reaction due to peritoneal dialysis catheter, sequela

ICD-10-CM Codes›S00–T88›T80-T88›T85

ICD-10-CM T85.71XS
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T85.71XS is a billable ICD-10-CM diagnosis code for infection and inflammatory reaction due to peritoneal 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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. Coders also document this condition as bacterial infection associated with peritoneal dialysis catheter. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.

T85.71XS no longer risk-adjusts for Medicare Advantage: it mapped to HCC 134 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 134, ESRD (V21) category 134, and ESRD (V24) category 134 for payment year 2027.

Code Identity

ICD-10-CM Code
T85.71XS
Billable Status
Yes — Valid for Submission
Code Describes
Infection and inflammatory reaction due to peritoneal dialysis catheter, sequela
Short Description
Infect/inflm reaction due to periton dialysis cath, sequela
Parent Code
T85.71
Infection and inflammatory reaction due to peritoneal dialysis catheter

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 CodeT85.71XSInfection and inflammatory reaction due to peritoneal dialysis catheter, sequela

Present on Admission (POA)Billing

T85.71XS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Complications of surgical and medical care, not elsewhere classified (T80-T88).

Medicare Risk Adjustment (HCC)Billing

T85.71XS no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
Dropped in V28 see all codes that no longer risk-adjust
Prior Model (CMS-HCC V24)
HCC 134
V24 retired last contributed to a Medicare Advantage risk score in payment year 2025
Other CMS Models
PACE (CMS-HCC V22): HCC 134 · ESRD (V21): HCC 134 · ESRD (V24): HCC 134
ESRD V21 weights: 0.000 dialysis, 0.000 functioning graft · ESRD V24 weights: 0.000 dialysis, 0.000 functioning graft
Part D (RxHCC)
Not mapped
T85.71XS does not risk-adjust in the RxHCC prescription drug model

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bacterial infection associated with peritoneal dialysis catheter
  • Continuous ambulatory peritoneal dialysis associated peritonitis
  • Fungal infection associated with peritoneal dialysis catheter
  • Infection associated with peritoneal dialysis catheter
  • Infection associated with Tenckhoff catheter
  • Peritoneal dialysis-associated peritonitis
  • Peritonitis due to infected 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 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 T85.71XS: its own notes plus those printed at T85.7, T85, block T80-T88, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

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 T85 Complications of other internal prosthetic devices, implants and grafts applies to 288 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 T85.7 Infection and inflammatory reaction due to other internal prosthetic devices, implants and grafts applies to 30 codes
  • code to identify infection
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 T85 Complications of other internal prosthetic devices, implants and grafts applies to 288 codes
  • The appropriate 7th character is to be added to each code from category T85
Values for category T85 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela this code

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name T85.71XS, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming T85.71XS: its condition is not part of those codes, and both may be reported when the patient has both.

  • T80.2 Infections following infusion, transfusion and therapeutic injection
    infections specified as due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7) names T85.7, which includes this code
  • T81.4 Infection following a procedure
    infection due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7) names T85.7, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ076
Complication, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

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

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

Convert T85.71XS 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 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 T85.71XSOverview

Is T85.71XS a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report infection and inflammatory reaction due to peritoneal dialysis catheter, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character S in T85.71XS mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the infection and inflammatory reaction due to peritoneal dialysis catheter itself has resolved, not the original event.

What MS-DRG does T85.71XS group to?

When infection and inflammatory reaction due to peritoneal dialysis catheter, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 923, 922, with relative weights from 0.9980 to 1.6248 depending on complications. Higher weights mean higher Medicare reimbursement.

Is T85.71XS 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 infection and inflammatory reaction due to peritoneal dialysis catheter, sequela on inpatient claims. The code appears in the Complications of surgical and medical care, not elsewhere classified (T80-T88) range of the CMS exempt list.

Does T85.71XS need an additional code?

When the condition applies, yes. The Use Additional Code note at T85.7, which applies to T85.71XS, reads: code to identify infection. The additional code is reported after T85.71XS.

Does T85.71XS risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage. T85.71XS mapped to HCC 134 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 134 (Dialysis Status), ESRD (V21) category 134 (Dialysis Status), and ESRD (V24) category 134 (Dialysis Status).