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ICD-10-CM · FY 2026 APRIL UPDATE

S36.4

Injury of small intestine

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
S36.40Unspecified injury of small intestineCategory
S36.400Unspecified injury of duodenumCategory
S36.400AUnspecified injury of duodenum, initial encounterBillable
S36.400DUnspecified injury of duodenum, subsequent encounterBillable
S36.400SUnspecified injury of duodenum, sequelaBillable
S36.408Unspecified injury of other part of small intestineCategory
S36.408AUnspecified injury of other part of small intestine, initial encounterBillable
S36.408DUnspecified injury of other part of small intestine, subsequent encounterBillable
S36.408SUnspecified injury of other part of small intestine, sequelaBillable
S36.409Unspecified injury of unspecified part of small intestineCategory
S36.409AUnspecified injury of unspecified part of small intestine, initial encounterBillable
S36.409DUnspecified injury of unspecified part of small intestine, subsequent encounterBillable
S36.409SUnspecified injury of unspecified part of small intestine, sequelaBillable
S36.41Primary blast injury of small intestineCategory
S36.410Primary blast injury of duodenumCategory
S36.410APrimary blast injury of duodenum, initial encounterBillable
S36.410DPrimary blast injury of duodenum, subsequent encounterBillable
S36.410SPrimary blast injury of duodenum, sequelaBillable
S36.418Primary blast injury of other part of small intestineCategory
S36.418APrimary blast injury of other part of small intestine, initial encounterBillable
S36.418DPrimary blast injury of other part of small intestine, subsequent encounterBillable
S36.418SPrimary blast injury of other part of small intestine, sequelaBillable
S36.419Primary blast injury of unspecified part of small intestineCategory
S36.419APrimary blast injury of unspecified part of small intestine, initial encounterBillable
S36.419DPrimary blast injury of unspecified part of small intestine, subsequent encounterBillable
S36.419SPrimary blast injury of unspecified part of small intestine, sequelaBillable
S36.42Contusion of small intestineCategory
S36.420Contusion of duodenumCategory
S36.420AContusion of duodenum, initial encounterBillable
S36.420DContusion of duodenum, subsequent encounterBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.