2026 ICD-10-CM Diagnosis Code S36.13XDInjury of bile duct, subsequent encounter
S36.13XD is a billable ICD-10-CM diagnosis code for injury of bile duct, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. Coders also document this condition as bile duct injury with open wound into cavity. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Internal organ injury, subsequent encounter.
Code Identity
Code Classification
Present on Admission (POA)Billing
S36.13XD 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.
- Bile duct injury with open wound into cavity
- Bile duct tear
- Contusion of bile duct
- Hemorrhage of bile duct
- Injury of bile duct
- Injury of bile duct without open wound into abdominal cavity
- Injury of biliary tree
- Peri-bile duct hematoma
- Transection of bile duct
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
Bile Duct Diseases
Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.
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Convert S36.13XD to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S36.13XDOverview
Is S36.13XD (Injury of bile duct) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report injury of bile duct, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character D in S36.13XD mean?
The final character D marks a subsequent encounter: use it for routine care while the injury of bile duct is healing, after active treatment has ended.
What MS-DRG does S36.13XD group to?
When injury of bile duct, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S36.13XD 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 injury of bile duct, subsequent encounter on inpatient claims.
What is the ICD-9 equivalent of S36.13XD?
Under the General Equivalence Mappings, injury of bile duct, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.
