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ICD-10-CM 2027 diagnosis code

K91.870Postprocedural hematoma of a digestive system organ or structure following a digestive system procedure

✓ Billable / specificCC — complication/comorbidity

K91.870 is a valid, billable ICD-10-CM code for postprocedural hematoma of a digestive system organ or structure following a digestive system procedure. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Postproc hematoma of a dgstv sys org fol a dgstv sys proc

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K91.870

K91.870 is the ICD-10-CM diagnosis code for postprocedural hematoma of a digestive system organ or structure following a digestive system procedure. It belongs to category K91 (intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified), block K90-K95 (other diseases of the digestive system) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within K91.87 (postprocedural hematoma and seroma of a digestive system organ or structure following a procedure), K91.870 is specifically for postprocedural hematoma of a digestive system organ or structure following a digestive system procedure. Related codes cover hematoma of a digestive system organ or structure following other procedure (K91.871), seroma of a digestive system organ or structure following a digestive system procedure (K91.872) and seroma of a digestive system organ or structure following other procedure (K91.873).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 919 (Complications of Treatment with MCC, relative weight 1.763), DRG 920 (Complications of Treatment with CC, relative weight 0.9975) and DRG 921 (Complications of Treatment without CC/MCC, relative weight 0.6722), in MDC 21 (Injuries, Poisonings and Toxic Effects of Drugs), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2017, effective October 1, 2016.

Before ICD-10, this condition was coded in ICD-9-CM as 998.12 (hematoma complicating a procedure).

Notes that apply from higher levels

Instructions written at a parent level also apply to K91.870.

› From K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
Excludes2
  • complications of artificial opening of digestive system (K94.-)
  • complications of bariatric procedures (K95.-)
  • gastrojejunal ulcer (K28.-)
  • postprocedural (radiation) retroperitoneal abscess (K68.11)
  • radiation colitis (K52.0)
  • radiation gastroenteritis (K52.0)
  • radiation proctitis (K62.7)

Broader instructions also apply from Chapter 11: Diseases of the digestive system.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to K91.870.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 998.12Hematoma complicating a procedureapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about K91.870

Is K91.870 billable?

Yes. K91.870 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K91.870 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K91.870 as a principal diagnosis.

Is K91.870 a CC or MCC?

K91.870 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does K91.870 group to?

K91.870 is used in the MS-DRG v44.0 logic for MS-DRG 919 (Complications of Treatment with MCC), MS-DRG 920 (Complications of Treatment with CC) and MS-DRG 921 (Complications of Treatment without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for K91.870?

The CMS General Equivalence Mappings map K91.870 to ICD-9-CM 998.12.