S36.503A Unspecified injury of sigmoid colon, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S36.503 with 7th character A (initial encounter).

Applies from S36 Injury of intra-abdominal organs

Code also

• any associated open wound (S31.-)

7th character note

• The appropriate 7th character is to be added to each code from category S36

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from S36.5 Injury of colon

Excludes2 (not included here)

• injury of rectum (S36.6-)

Code annotations containing back-references to S36.503A

Back-references to S36

• Use Additional: S38.1 Crushing injury of abdomen, lower back, and pelvis ("injury to intra-abdominal organs (S36.-)")

Diagnosis Index entries for S36.503A

• Injury › intestine › large › sigmoid

Nearby codes

• S36.502 Unspecified injury of descending [left] colon
• S36.502A Unspecified injury of descending [left] colon, initial encounter
• S36.502D Unspecified injury of descending [left] colon, subsequent encounter
• S36.502S Unspecified injury of descending [left] colon, sequela
• S36.503 Unspecified injury of sigmoid colon
• S36.503A Unspecified injury of sigmoid colon, initial encounter (this code)
• S36.503D Unspecified injury of sigmoid colon, subsequent encounter
• S36.503S Unspecified injury of sigmoid colon, sequela
• S36.508 Unspecified injury of other part of colon
• S36.508A Unspecified injury of other part of colon, initial encounter
• S36.508D Unspecified injury of other part of colon, subsequent encounter