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ICD-10-CM 2027 diagnosis code

K68.11Postprocedural retroperitoneal abscess

✓ Billable / specificCC — complication/comorbidity

K68.11 is a valid, billable ICD-10-CM code for postprocedural retroperitoneal abscess. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K68.11

K68.11 is the ICD-10-CM diagnosis code for postprocedural retroperitoneal abscess. It belongs to category K68 (disorders of retroperitoneum), block K65-K6A (diseases of peritoneum, retroperitoneum and pelvis) 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 K68.1 (retroperitoneal abscess), K68.11 is specifically for postprocedural retroperitoneal abscess. Related codes cover Psoas muscle abscess (K68.12) and other retroperitoneal abscess (K68.19).

The conditions in its Excludes2 note aren't part of K68.11, but may be coded alongside it if the patient has both: infection following procedure (T81.4-).

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 791 (Prematurity with Major Problems, relative weight 4.1075), DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), DRG 856 (Postoperative or Post-Traumatic Infections with O.R. Procedures with MCC, relative weight 4.4826), DRG 857 (Postoperative or Post-Traumatic Infections with O.R. Procedures with CC, relative weight 2.1678), DRG 858 (Postoperative or Post-Traumatic Infections with O.R. Procedures without CC/MCC, relative weight 1.4036), DRG 862 (Postoperative and Post-Traumatic Infections with MCC, relative weight 1.7904) and 1 more, in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), 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 has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 998.59 (other postoperative infection).

Coding notes

Excludes2Not included here — may be reported together if both conditions exist
  • infection following procedure (T81.4-)

Notes that apply from higher levels

Instructions written at a parent level also apply to K68.11.

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

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to K68.11.

Codes whose notes reference K68.11

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.

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 998.59Other postoperative infectionapproximate

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about K68.11

Is K68.11 billable?

Yes. K68.11 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K68.11 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K68.11 as a principal diagnosis.

Is K68.11 a CC or MCC?

K68.11 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does K68.11 group to?

K68.11 is used in the MS-DRG v44.0 logic for MS-DRG 791 (Prematurity with Major Problems), MS-DRG 793 (Full Term Neonate with Major Problems), MS-DRG 856 (Postoperative or Post-Traumatic Infections with O.R. Procedures with MCC), MS-DRG 857 (Postoperative or Post-Traumatic Infections with O.R. Procedures with CC), MS-DRG 858 (Postoperative or Post-Traumatic Infections with O.R. Procedures without CC/MCC), MS-DRG 862 (Postoperative and Post-Traumatic Infections with MCC) and 1 more. 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 K68.11?

The CMS General Equivalence Mappings map K68.11 to ICD-9-CM 998.59.