2026 ICD-10-CM Diagnosis Code S36.430SLaceration of duodenum, sequela
S36.430S is a billable ICD-10-CM diagnosis code for laceration of duodenum, 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. Coders also document this condition as laceration of duodenum. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S36.430S 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.
- Laceration of duodenum
- Laceration of small intestine
- Serosal tear of duodenum
- Serosal tear of small intestine
- Transection of duodenum
- Transection of small intestine
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
Small Intestine Disorders
Your small intestine is the longest part of your digestive system - about twenty feet long! It connects your stomach to your large intestine (or colon) and folds many times to fit inside your abdomen. Your small intestine does most of the digesting of the foods you eat. It has three areas called the duodenum, the ileum, and the jejunum.
Read the full article at MedlinePlus
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Convert S36.430S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S36.430SOverview
Is S36.430S (Laceration of duodenum) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report laceration of duodenum, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S36.430S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the laceration of duodenum itself has resolved, not the original event.
What MS-DRG does S36.430S group to?
When laceration of duodenum, 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 S36.430S 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 laceration of duodenum, sequela on inpatient claims.
What is the ICD-9 equivalent of S36.430S?
Under the General Equivalence Mappings, laceration of duodenum, 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.
