2026 ICD-10-CM Diagnosis Code S36.90XSUnspecified injury of unspecified intra-abdominal organ, sequela
S36.90XS is a billable ICD-10-CM diagnosis code for unspecified injury of unspecified intra-abdominal organ, 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 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S36.90XS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abdominal cavity injury
- Accidental injury of intestine during surgical procedure
- Crushing injury of abdomen
- Gastrointestinal and digestive injury
- Injury of gastrointestinal tract
- Injury of gastrointestinal tract with open wound into abdominal cavity
- Injury of gastrointestinal tract without open wound into abdominal cavity
- Injury of intestine
- Injury of intestine with open wound into abdominal cavity
- Injury of intestine without open wound into abdominal cavity
- Injury of multiple intra-abdominal organs
- Injury of multiple intra-abdominal organs with open wound into abdominal cavity
- Injury of multiple intra-abdominal organs without open wound into abdominal cavity
- Injury to intestine during surgery
- Internal injury of abdominal organ
- Internal injury of abdominal organs with open wound into cavity
- Internal injury of abdominal organs without open wound into cavity
- Late effect of internal injury to intra-abdominal and pelvic organs
- Late effect of internal injury to intra-abdominal organs
- Multiple injuries of intestine
- Severe crushing injury of abdominal organs
- Severe crushing injury of abdominal organs with open wound into cavity
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Injury of intra-abdominal organs (S36). 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 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Wounds and Injuries
An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S36.90XS to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S36.90XSOverview
Is S36.90XS (Unspecified injury of unspecified intra-abdominal organ) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of unspecified intra-abdominal organ, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S36.90XS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the unspecified injury of unspecified intra-abdominal organ itself has resolved, not the original event.
What MS-DRG does S36.90XS group to?
When unspecified injury of unspecified intra-abdominal organ, sequela 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.
Is S36.90XS 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 unspecified injury of unspecified intra-abdominal organ, sequela on inpatient claims.
What is the ICD-9 equivalent of S36.90XS?
Under the General Equivalence Mappings, unspecified injury of unspecified intra-abdominal organ, sequela converts to ICD-9-CM 908.1 (late eff int inj abdomen). 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.
