2027 ICD-10-CM Diagnosis Code K68.3Retroperitoneal hematoma

ICD-10-CM Codes›K00–K95›K65-K6A›K68

ICD-10-CM K68.3
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K68.3 is a billable ICD-10-CM diagnosis code for retroperitoneal hematoma. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 371 through 373, 791, 793. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 19 closely related codes. Coders also document this condition as nontraumatic retroperitoneal hematoma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified gastrointestinal disorders.

Code Identity

ICD-10-CM Code
K68.3
Billable Status
Yes — Valid for Submission
Code Describes
Retroperitoneal hematoma
Short Description
Retroperitoneal hematoma
Same as the full description in the CMS dataset.
Parent Code
K68
Disorders of retroperitoneum

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK65-K6ADiseases of peritoneum and retroperitoneum
CategoryK68Disorders of retroperitoneum
This CodeK68.3Retroperitoneal hematoma

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Nontraumatic retroperitoneal hematoma
  • Retroperitoneal hemorrhage
  • Traumatic retroperitoneal hematoma

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K68.3: its own notes plus those printed at Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Retroperitoneal hemorrhage

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 Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K68.3, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming K68.3: they are not reported together with it, unless the two conditions are unrelated.

  • K65 Peritonitis
    retroperitoneal infections (K68.-) names K68.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming K68.3: its condition is not part of those codes, and both may be reported when the patient has both.

  • K66.1 Hemoperitoneum
    retroperitoneal hematoma (K68.3)
  • K66.1 Hemoperitoneum
    retroperitoneal hemorrhage (K68.3)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR DIG025
Other specified and unspecified gastrointestinal disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Bleeding

Bleeding is the loss of blood. It can be external, or outside the body, like when you get a cut or wound. It can also be internal, or inside the body, like when you have an injury to an internal organ. Some bleeding, such as gastrointestinal bleeding, coughing up blood, or vaginal bleeding, can be a symptom of a disease.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement K68.3 replaces the following previously assigned code(s):

  • K68.9 - Other disorders of retroperitoneum
FY 2024AddedAdded to the ICD-10-CM code setEffective October 1, 2023.
FY 2025–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K68.3Overview

What is the ICD-10 code for retroperitoneal hematoma?

The ICD-10-CM code for retroperitoneal hematoma is K68.3 (sometimes written as K683). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K68.3 (Disorders of retroperitoneum) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report retroperitoneal hematoma on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K68.3 group to?

When retroperitoneal hematoma is the principal diagnosis on an inpatient stay, it groups to MS-DRG 372, 793, 791, 371, 373, with relative weights from 0.6945 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is K68.3 a CC or MCC?

CMS lists K68.3 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 19 closely related codes in its exclusion list.