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S36.503

Unspecified injury of sigmoid colon

Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 5 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.
Exclusions 9 never code together
S36.5code
Excludes2
  • injury of rectum (S36.6-)S36.6-
S30-S39block
Excludes2
  • burns and corrosions (T20-T32)T20-T32
  • effects of foreign body in anus and rectum (T18.5)T18.5
  • effects of foreign body in genitourinary tract (T19.-)T19.-
  • effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)T18.2-T18.4
  • frostbite (T33-T34)T33-T34
  • insect bite or sting, venomous (T63.4)T63.4
S00-T88chapter
Excludes2

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 10
S36code
Code also
  • any associated open wound (S31.-)S31.-
S30-S39block
Includes
  • injuries to the abdominal wall
  • injuries to the anus
  • injuries to the buttock
  • injuries to the external genitalia
  • injuries to the flank
  • injuries to the groin
S00-T88chapter
Notes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
  • code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
Alongside this code 5 same parent — S36.50
S36.500 Unspecified injury of ascending [right] colon category S36.501 Unspecified injury of transverse colon category S36.502 Unspecified injury of descending [left] colon category S36.508 Unspecified injury of other part of colon category S36.509 Unspecified injury of unspecified part of colon category
Subordinate codes 3
S36.503A Unspecified injury of sigmoid colon, initial encounter S36.503D Unspecified injury of sigmoid colon, subsequent encounter S36.503S Unspecified injury of sigmoid colon, sequela
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
S36.50
Block
S30-S39
Siblings
5
Subordinate
3

Present FY2024–FY2027.