S31

Open wound of abdomen, lower back, pelvis and external genitals

Header / non-billable

Choose the additional character

S31 needs more characters to be billable. Pick the specific code below.

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · S31
Excludes 1

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

Excludes 2

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

7th character

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

Valid 7th characters and their meanings
CharacterMeaning
Ainitial encounter
Dsubsequent encounter
Ssequela
Inherited from S30-S39Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals
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

Excludes 2

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)

Inherited from chapter 19Injury, poisoning and certain other consequences of external causes
Excludes 2

birth trauma (P10-P15) obstetric trauma (O70-O71)

Use additional

code to identify any retained foreign body, if applicable (Z18.-)

Note

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. (T07-T88) Injury, poisoning and certain other consequences of external causes (T07-T88) (T20-T32) Burns and corrosions (T20-T32) Includes: burns (thermal) from electrical heating appliances burns (thermal) from electricity burns (thermal) from flame burns (thermal) from friction burns (thermal) from hot air and hot gases burns (thermal) from hot objects burns (thermal) from lightning burns (thermal) from radiation chemical burn [corrosion] (external) (internal) scalds Excludes2: erythema [dermatitis] ab igne (L59.0) radiation-related disorders of the skin and subcutaneous tissue (L55-L59) sunburn (L55.-)

Official Guidelines for S31

FY 2026 ›
I.C.19Chapter-specific guidanceChapter 19: Injury, poisoning, and certain other consequences of external causes (S00-T88)

Subsections

Sections that reference S31

Sections whose FY 2026 text names S31, its S31 category, or a range containing it — the chapter guidance above is the authoritative source.