What S31 covers · when clinicians use it
ICD-10 code S31 identifies Open wound of abdomen, lower back, pelvis and external genitals in the U.S. ICD-10-CM clinical and billing record set. It sits within the Injury, Poisoning & External Causes chapter (S00–T88), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply S31 when an encounter's findings match the Open wound of abdomen, lower back, pelvis and external genitals description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify S31 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for S31 and is a coding reference, not clinical, diagnostic, or billing advice.
ICD10 code S31 represents Open wound of abdomen, lower back, pelvis and external genitals, which includes a range of external and internal trauma affecting the abdomen, lower back, pelvis, and external genitalia structures.
Symptoms
- Surface bruises, abrasions, or trauma to the abdomen and pelvis – S30
- Open wounds and lacerations of abdominal and pelvic areas – S31
- Fractures of lumbar vertebrae or pelvic bones – S32
- Sprains, ligament tears, and joint dislocations in the lower spine and pelvis – S33
- Nerve injuries leading to motor or sensory loss at lower back and pelvis – S34
- Vascular damage causing bleeding in abdominal and pelvic regions – S35
- Organ trauma involving liver, spleen, intestines, bladder – S36
- Urinary system or genital organ injuries – S37
- Severe crush injuries or amputations – S38
- Other complex or unspecified abdominal-pelvic injuries – S39
Diagnosis
Evaluation of these injuries typically involves clinical examination, Focused Assessment with Sonography for Trauma (FAST), abdominal CT scans, MRI, and angiography to assess internal organ damage, vascular injuries, or fractures.
ICD10 Code Usage
S31 is widely utilized in trauma registries, emergency department documentation, surgical coding, insurance billing, and medico-legal reports relating to abdominal and pelvic injuries.
Related Codes
- S30 – Superficial injury of abdomen, lower back, pelvis and external genitals
- S32 – Fracture of lumbar spine and pelvis
- S33 – Dislocation and sprain of joints and ligaments of lumbar spine and pelvis
- S34 – Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level
- S35 – Injury of blood vessels at abdomen, lower back and pelvis level
- S36 – Injury of intra-abdominal organs
- S37 – Injury of urinary and pelvic organs
- S38 – Crushing injury and traumatic amputation of abdomen, lower back, pelvis and external genitals
- S39 – Other and unspecified injuries of abdomen, lower back, pelvis and external genitals
FAQs
Q1: What is ICD10 code S31?
A: It identifies injuries to the abdominal, pelvic, lumbar spine, and external genitalia areas.
Q2: How are pelvic fractures usually diagnosed?
A: Through pelvic X-rays and CT scans for better visualization of fractures and dislocations.
Q3: Can abdominal injuries cause delayed complications?
A: Yes, internal bleeding, infections, or bowel injuries can sometimes present later.
Q4: What surgeries are common after abdominal trauma?
A: Laparotomy, vascular repair, and orthopedic surgeries for spinal or pelvic injuries.
Q5: What are signs of intra-abdominal bleeding?
A: Low blood pressure, abdominal distension, tenderness, and signs of shock.
Conclusion
Proper coding with ICD10 S31 ensures comprehensive clinical documentation and helps in the optimal management of Open wound of abdomen, lower back, pelvis and external genitals, improving patient outcomes and medico-legal accuracy.