2026 ICD-10-CM Diagnosis Code K91.83Postprocedural hepatorenal syndrome

ICD-10-CM Codes›K00–K95›K90-K95›K91

ICD-10-CM K91.83
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K91.83 is a billable ICD-10-CM diagnosis code for postprocedural hepatorenal syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. Coders also document this condition as hepatic failure due to a procedure. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute and unspecified renal failure, Other specified and unspecified liver disease, and Postprocedural or postoperative digestive system complication.

Code Identity

ICD-10-CM Code
K91.83
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural hepatorenal syndrome
Short Description
Postprocedural hepatorenal syndrome
Same as the full description in the CMS dataset.
Parent Code
K91.8
Other intraoperative and postprocedural complications and disorders of digestive system

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK90-K95Other diseases of the digestive system
CategoryK91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
This CodeK91.83Postprocedural hepatorenal syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Hepatic failure due to a procedure
  • Hepatorenal syndrome
  • Hepatorenal syndrome due to a procedure

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Syndrome
      • hepatorenal
        • postoperative or postprocedural

Clinical ClassificationClinical

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

CCSR GEN002
Acute and unspecified renal failure
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG019
Other specified and unspecified liver disease
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG024
Postprocedural or postoperative digestive system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hepatorenal Syndrome

    functional kidney failure in patients with liver disease, usually liver cirrhosis or portal hypertension (hypertension, portal), and in the absence of intrinsic renal disease or kidney abnormality. it is characterized by intense renal vasculature constriction, reduced renal blood flow, oliguria, and sodium retention.

Patient EducationClinical

After Surgery

After any operation, you'll have some side effects. There is usually some pain with surgery. There may also be swelling and soreness around the area that the surgeon cut. Your surgeon can tell you which side effects to expect.

Read the full article at MedlinePlus

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

Convert K91.83 to ICD-9-CMHistory

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

ICD-9-CM
997.49 Oth digestv system comp
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K91.83Overview

Is K91.83 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postprocedural hepatorenal syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K91.83 group to?

When postprocedural hepatorenal syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 393, 394, 395, with relative weights from 0.6490 to 1.5993 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K91.83?

Under the General Equivalence Mappings, postprocedural hepatorenal syndrome converts to ICD-9-CM 997.49 (oth digestv system comp). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.