S36.400A ICD-10-CM Code: Unspecified injury of duodenum, initial encounter
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
S36.400AUnspecified injury of duodenum, initial encounter
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where S36.400A sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39)
- 3
Category S36
Injury of intra-abdominal organs
- 4
Subcategory S36.400
Unspecified injury of duodenum
- 5
Code S36.400A
Unspecified injury of duodenum, initial encounter
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for S36.400A.
Code first
No “code first” instruction is listed for S36.400A.
Use additional code
No “use additional code” instruction is listed for S36.400A.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for S36.400A.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for S36.400A.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code S36.400A mean?
S36.400A is the FY 2027 U.S. ICD-10-CM code for “Unspecified injury of duodenum, initial encounter.”
Is S36.400A a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, S36.400A has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is S36.400A located in ICD-10-CM?
S36.400A is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39) (S30–S39), under category S36, Injury of intra-abdominal organs and subcategory S36.400, Unspecified injury of duodenum.
What coding notes are listed for S36.400A?
No inclusion terms are listed for S36.400A in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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