ICD-10-CM › S00-T88 › S30-S39 › S31.10 Unspecified open wound of... › S31.109

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

• S31.109A Unspecified open wound of abdominal wall, unspecified quadrant without penetration into peritoneal cavity, initial encounter
• S31.109D Unspecified open wound of abdominal wall, unspecified quadrant without penetration into peritoneal cavity, subsequent encounter
• S31.109S Unspecified open wound of abdominal wall, unspecified quadrant without penetration into peritoneal cavity, sequela

This code requires a seventh character. See the rule below.

What has happened to this code

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from S31 Open wound of abdomen, lower back, pelvis and external genitals

Seventh character required

• The appropriate 7th character is to be added to each code from category S31

Excludes1 - never coded here

• traumatic amputation of part of abdomen, lower back and pelvis (S38.2-, S38.3)

Excludes2 - not included here

• open wound of hip (S71.00-S71.02)
• open fracture of pelvis (S32.1--S32.9 with 7th character B)

Code also

• any associated:
• spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
• wound infection

Inherited from the S30-S39 section Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39)

Excludes2 - not included here

• burns and corrosions (T20-T32)
• effects of foreign body in anus and rectum (T18.5)
• effects of foreign body in genitourinary tract (T19.-)
• effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)
• frostbite (T33-T34)
• insect bite or sting, venomous (T63.4)

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Injury > anus
• Injury > flank
• Injury > groin
• Hematoperitoneum
• Wound, open > groin
• Wound, open > iliac
• Injury > abdomen, abdominal > open
• Hemoperitoneum > traumatic > with open wound
• Wound, open > loin
• Wound, open > hypochondrium
• Wound, open > inguinal region
• Wound, open > hypogastric region
• Wound, open > abdomen, abdominal > wall

Codes in the same group

Code	Description	Status
S31.100	Unspecified open wound of abdominal wall, right upper quadrant without penetration into peritoneal cavity	Not billable
S31.101	Unspecified open wound of abdominal wall, left upper quadrant without penetration into peritoneal cavity	Not billable
S31.102	Unspecified open wound of abdominal wall, epigastric region without penetration into peritoneal cavity	Not billable
S31.103	Unspecified open wound of abdominal wall, right lower quadrant without penetration into peritoneal cavity	Not billable
S31.104	Unspecified open wound of abdominal wall, left lower quadrant without penetration into peritoneal cavity	Not billable
S31.105	Unspecified open wound of abdominal wall, periumbilic region without penetration into peritoneal cavity	Not billable
S31.106	Unspecified open wound of abdominal wall, right flank without penetration into peritoneal cavity	Not billable
S31.107	Unspecified open wound of abdominal wall, left flank without penetration into peritoneal cavity	Not billable
S31.10A	Unspecified open wound of abdominal wall, unspecified flank without penetration into peritoneal cavity	Not billable