2024 ICD-10-CM Diagnosis Code S31.000

Unspecified open wound of lower back and pelvis without penetration into retroperitoneum

ICD-10-CM Code:
S31.000
ICD-10 Code for:
Unsp opn wnd lower back and pelvis w/o penet retroperiton
Is Billable?
Not Valid for Submission
Code Navigator:

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)

S31.000 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of unspecified open wound of lower back and pelvis without penetration into retroperitoneum. The code is not specific and is NOT valid for the year 2024 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.

Unspecified diagnosis codes like S31.000 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Unsp opn wnd lower back and pelvis w/o penet retroperiton

Non-specific codes like S31.000 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for unsp opn wnd lower back and pelvis w/o penet retroperiton:

  • Use S31.000A for initial encounter - BILLABLE CODE

  • Use S31.000D for subsequent encounter - BILLABLE CODE

  • Use S31.000S for sequela - BILLABLE CODE

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Burst fracture of lumbar vertebra
  • Central cord syndrome of lumbar spinal cord
  • Complete disruption of pelvic ring
  • Complete disruption of pelvic ring
  • Dislocation of symphysis pubis
  • Fracture dislocation of sacroiliac joint
  • Fracture of coccyx
  • Fracture of fifth lumbar vertebra
  • Fracture of first lumbar vertebra
  • Fracture of fourth lumbar vertebra
  • Fracture of lumbar spine with cord lesion
  • Fracture of lumbar spine with cord lesion
  • Fracture of lumbar spine with cord lesion
  • Fracture of lumbar spine with cord lesion
  • Fracture of lumbar spine with cord lesion
  • Fracture of multiple pubic rami
  • Fracture of multiple pubic rami
  • Fracture of second lumbar vertebra
  • Fracture of spinous process of lumbar vertebra
  • Fracture of superior pubic ramus
  • Fracture of third lumbar vertebra
  • Fracture of transverse process of lumbar vertebra
  • Fractures involving thorax with lower back and pelvis
  • Fractures involving thorax with lower back and pelvis with limb
  • Injury of lumbosacral plexus
  • Multiple open anterior-posterior compression fractures of pelvis with stable pelvic ring
  • Multiple open anterior-posterior compression fractures of pelvis with unstable pelvic ring
  • Multiple open fractures of pelvis with disruption of pelvic circle
  • Multiple open fractures of pelvis with disruption of pelvic circle
  • Multiple open fractures of pelvis with disruption of pelvic circle
  • Multiple open lateral compression fractures of pelvis with stable pelvic ring
  • Multiple open lateral compression fractures of pelvis with unstable pelvic ring
  • Multiple open vertical shear fractures of pelvis with unstable pelvic ring
  • Multiple open wounds of abdomen, lower back and pelvis
  • Multiple open wounds of lower back
  • Multiple open wounds of pelvic region
  • Open avulsion fracture of anterior inferior spine of ilium
  • Open complete rupture of pelvic ring
  • Open complete rupture of sacroiliac joint
  • Open complete rupture pubic symphysis
  • Open compression fracture sacrum
  • Open dislocation of coccyx
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbar vertebra
  • Open dislocation of lumbosacral joint
  • Open dislocation of sacroiliac joint
  • Open dislocation of sacroiliac joint
  • Open dislocation of sacroiliac joint
  • Open dislocation of sacrum
  • Open division anterior sacroiliac ligament
  • Open division iliolumbar ligament
  • Open division of pubic ligament
  • Open division pelvic ligament
  • Open division posterior sacroiliac ligament
  • Open division sacroiliac ligament
  • Open division sacrospinous ligament
  • Open division sacrotuberous ligament
  • Open division symphysis pubis
  • Open division, lumbar ligament
  • Open division, sacrum ligament
  • Open fracture dislocation of pelvis
  • Open fracture dislocation of sacroiliac joint
  • Open fracture involving thorax with lower back and pelvis and limbs
  • Open fracture lumbar vertebra
  • Open fracture lumbar vertebra, burst
  • Open fracture lumbar vertebra, posterior arch
  • Open fracture lumbar vertebra, posterior arch
  • Open fracture lumbar vertebra, spinous process
  • Open fracture lumbar vertebra, spondylolysis
  • Open fracture lumbar vertebra, transverse process
  • Open fracture lumbar vertebra, tricolumnar
  • Open fracture of anterior column of left acetabulum
  • Open fracture of anterior column of right acetabulum
  • Open fracture of coccyx
  • Open fracture of fifth lumbar vertebra
  • Open fracture of first lumbar vertebra
  • Open fracture of fourth lumbar vertebra
  • Open fracture of ilium
  • Open fracture of innominate bone
  • Open fracture of left acetabulum
  • Open fracture of left acetabulum
  • Open fracture of left pubis
  • Open fracture of lumbar spine with incomplete lesion of lumbar spinal cord
  • Open fracture of lumbar vertebra with spinal cord injury
  • Open fracture of lumbar vertebra with spinal cord injury
  • Open fracture of lumbar vertebra with spinal cord injury
  • Open fracture of lumbar vertebra with spinal cord injury
  • Open fracture of lumbar vertebra with spinal cord injury
  • Open fracture of pubis
  • Open fracture of pubis
  • Open fracture of pubis
  • Open fracture of pubis
  • Open fracture of right acetabulum
  • Open fracture of right acetabulum
  • Open fracture of right pubis
  • Open fracture of sacrum AND/OR coccyx with cauda equina injury
  • Open fracture of sacrum AND/OR coccyx with complete cauda equina lesion
  • Open fracture of sacrum with complete cauda equina lesion
  • Open fracture of second lumbar vertebra
  • Open fracture of third lumbar vertebra
  • Open fracture pelvis, single pubic ramus
  • Open fracture sacrum
  • Open fracture sacrum
  • Open fracture sacrum
  • Open fracture subluxation of pelvis
  • Open injury cauda equina
  • Open injury pudendal nerve
  • Open injury sacral plexus
  • Open Malgaigne fracture
  • Open spinal dislocation with anterior lumbar cord lesion
  • Open spinal dislocation with cauda equina lesion
  • Open spinal dislocation with cauda equina lesion
  • Open spinal dislocation with central lumbar cord lesion
  • Open spinal dislocation with complete lumbar cord lesion
  • Open spinal dislocation with posterior lumbar cord lesion
  • Open spinal fracture with anterior lumbar cord lesion
  • Open spinal fracture with cauda equina lesion
  • Open spinal fracture with cauda equina lesion
  • Open spinal fracture with cauda equina lesion
  • Open spinal fracture with cauda equina lesion
  • Open spinal fracture with central lumbar cord lesion
  • Open spinal fracture with complete lumbar cord lesion
  • Open spinal fracture with posterior lumbar cord lesion
  • Open spinal subluxation with anterior lumbar cord lesion
  • Open spinal subluxation with cauda equina lesion
  • Open spinal subluxation with central lumbar cord lesion
  • Open spinal subluxation with complete lumbar cord lesion
  • Open spinal subluxation with posterior lumbar cord lesion
  • Open stable fracture of multiple pubic rami
  • Open subluxation lumbar spine
  • Open subluxation lumbar spine
  • Open subluxation lumbar spine
  • Open subluxation lumbar spine
  • Open subluxation lumbar spine
  • Open subluxation of coccyx
  • Open subluxation of sacrum
  • Open traumatic dislocation of pelvis
  • Open traumatic subluxation of pelvis
  • Open traumatic subluxation of pelvis
  • Open traumatic subluxation of pelvis
  • Open traumatic subluxation of pelvis
  • Open unstable fracture of multiple pubic rami
  • Open vertical fracture of ilium
  • Open wound of anterior abdominal wall without complication
  • Open wound of back with complication
  • Open wound of back with complication
  • Open wound of back, uncomplicated
  • Open wound of back, uncomplicated
  • Open wound of hypogastric region
  • Open wound of lower back
  • Open wound of lumbar region
  • Open wound of lumbar region with complication
  • Open wound of lumbar region without complication
  • Open wound of pelvic region
  • Open wound of pelvic region with complication
  • Open wound of pelvic region without complication
  • Open wound of pubic region without complication
  • Open wound of sacroiliac region
  • Open wound of sacroiliac region
  • Open wound of sacroiliac region with complication
  • Open wound of sacroiliac region without complication
  • Open wounds involving thorax with abdomen, lower back and pelvis
  • Posterior cord syndrome of lumbar spinal cord
  • Pudendal nerve injury
  • Pudendal nerve neuropathy
  • Spinal subluxation with cauda equina lesion
  • Spinal subluxation with lumbar cord lesion
  • Spinal subluxation with lumbar cord lesion
  • Spinal subluxation with lumbar cord lesion
  • Spinal subluxation with lumbar cord lesion
  • Subluxation of coccyx
  • Subluxation of sacrum
  • Subluxation of sacrum
  • Three column fracture of lumbar vertebra
  • Traumatic amputation of lower back
  • Traumatic amputation of pelvis
  • Traumatic dislocation of lumbosacral joint
  • Traumatic dislocation of sacrococcygeal joint
  • Traumatic dislocation of sacrococcygeal joint
  • Traumatic dislocation of sacroiliac joint
  • Traumatic dislocation of sacroiliac joint
  • Traumatic dislocation of sacroiliac joint
  • Traumatic rupture of symphysis pubis
  • Vertical fracture of ilium

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.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Unspecified open wound of lower back and pelvis NOS

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

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 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.