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  6. 2026 ICD-10-CM Code S31

2026 ICD-10-CM Diagnosis Code S31

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

ICD-10-CM Code:
S31
ICD-10 Code for:
Opn wnd abdomen, lower back, pelvis and external genitals
Is Billable?
Not Valid for Submission
Code Navigator:

S31 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity from the list below for a diagnosis of open wound of abdomen, lower back, pelvis and external genitals. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Opn wnd abdomen, lower back, pelvis and external genitals

Non-specific codes like S31 require more digits to indicate the appropriate level of specificity. Consider using any of the following billable codes with a higher level of specificity when coding for opn wnd abdomen, lower back, pelvis and external genitals:

  • S31.0 for Open wound of lower back and pelvis

  • S31.00 for Unspecified open wound of lower back and pelvis

  • S31.01 for Laceration without foreign body of lower back and pelvis

  • S31.02 for Laceration with foreign body of lower back and pelvis

  • S31.03 for Puncture wound without foreign body of lower back and pelvis

  • S31.04 for Puncture wound with foreign body of lower back and pelvis

  • S31.05 for Open bite of lower back and pelvis

  • S31.1 for Open wound of abdominal wall without penetration into peritoneal cavity

  • S31.10 for Unspecified open wound of abdominal wall without penetration into peritoneal cavity

  • S31.11 for Laceration without foreign body of abdominal wall without penetration into peritoneal cavity

  • S31.12 for Laceration with foreign body of abdominal wall without penetration into peritoneal cavity

  • S31.13 for Puncture wound of abdominal wall without foreign body without penetration into peritoneal cavity

  • S31.14 for Puncture wound of abdominal wall with foreign body without penetration into peritoneal cavity

  • S31.15 for Open bite of abdominal wall without penetration into peritoneal cavity

  • S31.2 for Open wound of penis

  • S31.20 for Unspecified open wound of penis

  • S31.21 for Laceration without foreign body of penis

  • S31.22 for Laceration with foreign body of penis

  • S31.23 for Puncture wound without foreign body of penis

  • S31.24 for Puncture wound with foreign body of penis

  • S31.25 for Open bite of penis

  • S31.3 for Open wound of scrotum and testes

  • S31.30 for Unspecified open wound of scrotum and testes

  • S31.31 for Laceration without foreign body of scrotum and testes

  • S31.32 for Laceration with foreign body of scrotum and testes

  • S31.33 for Puncture wound without foreign body of scrotum and testes

  • S31.34 for Puncture wound with foreign body of scrotum and testes

  • S31.35 for Open bite of scrotum and testes

  • S31.4 for Open wound of vagina and vulva

  • S31.40 for Unspecified open wound of vagina and vulva

  • S31.41 for Laceration without foreign body of vagina and vulva

  • S31.42 for Laceration with foreign body of vagina and vulva

  • S31.43 for Puncture wound without foreign body of vagina and vulva

  • S31.44 for Puncture wound with foreign body of vagina and vulva

  • S31.45 for Open bite of vagina and vulva

  • S31.5 for Open wound of unspecified external genital organs

  • S31.50 for Unspecified open wound of unspecified external genital organs

  • S31.51 for Laceration without foreign body of unspecified external genital organs

  • S31.52 for Laceration with foreign body of unspecified external genital organs

  • S31.53 for Puncture wound without foreign body of unspecified external genital organs

  • S31.54 for Puncture wound with foreign body of unspecified external genital organs

  • S31.55 for Open bite of unspecified external genital organs

  • S31.6 for Open wound of abdominal wall with penetration into peritoneal cavity

  • S31.60 for Unspecified open wound of abdominal wall with penetration into peritoneal cavity

  • S31.61 for Laceration without foreign body of abdominal wall with penetration into peritoneal cavity

  • S31.62 for Laceration with foreign body of abdominal wall with penetration into peritoneal cavity

  • S31.63 for Puncture wound without foreign body of abdominal wall with penetration into peritoneal cavity

  • S31.64 for Puncture wound with foreign body of abdominal wall with penetration into peritoneal cavity

  • S31.65 for Open bite of abdominal wall with penetration into peritoneal cavity

  • S31.8 for Open wound of other parts of abdomen, lower back and pelvis

  • S31.80 for Open wound of unspecified buttock

  • S31.81 for Open wound of right buttock

  • S31.82 for Open wound of left buttock

  • S31.83 for Open wound of anus

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    S00–T88
    • Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals
      S30-S39
      • Open wound of abdomen, lower back, pelvis and external genitals
        S31

Coding Guidelines

The appropriate 7th character is to be added to each code from block Open wound of abdomen, lower back, pelvis and external genitals (S31). Use the following options for the aplicable episode of care:

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

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code Also

Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • traumatic amputation of part of abdomen, lower back and pelvis S38.2 S38.3

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

7th Character Note

7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • The appropriate 7th character is to be added to each code from category S31

7th Character

7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Patient Education


Wounds and Injuries

An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening. Injuries can happen at work or play, indoors or outdoors, driving a car, or walking across the street.

Wounds are injuries that break the skin or other body tissues. They include cuts, scrapes, scratches, and punctured skin. They often happen because of an accident, but surgery, sutures, and stitches also cause wounds. Minor wounds usually aren't serious, but it is important to clean them. Serious and infected wounds may require first aid followed by a visit to your doctor. You should also seek attention if the wound is deep, you cannot close it yourself, you cannot stop the bleeding or get the dirt out, or it does not heal.

Other common types of injuries include:

  • Animal bites
  • Bruises
  • Burns
  • Dislocations
  • Electrical injuries
  • Fractures (broken bones)
  • Sprains and strains

[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.