ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group S31 includes open wounds of the abdomen, lower back, pelvis, and external genital regions, covering lacerations, avulsions, punctures, and open traumatic injuries localized to those anatomical areas. These ICD-10-CM diagnosis codes are used to document the presence, location, and severity of traumatic open wounds, capturing organ involvement, contamination, and need for surgical or wound management. Accurate coding within the ICD-10-CM S31 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM S31: Open Wound Of Abdomen, Lower Back, Pelvis And External Genitals Overview

The ICD-10-CM S31 code group captures open wounds affecting the abdominal wall, lower back, pelvis, and external genital regions. These diagnoses target traumatic breaches of skin and underlying soft tissue in those anatomical areas and may involve varying depth and contamination. Accurate coding matters for proper clinical documentation and supports correct reimbursement by reflecting the extent and complexity of the injury.

When to Use

Use a code from this group when the clinical record documents an open traumatic wound localized to the abdomen, lower back, pelvis, or external genitals with sufficient detail on location and characteristics. Select the specific code based on the wound type, laterality, and any stated complications such as infection or penetration into deeper tissues.

ICD-10-CM Codes

558 rows

ICD-10-CM Code	Description
S31.000A	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.000D	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.000S	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, sequela
S31.001A	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.001D	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.001S	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, sequela
S31.010A	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.010D	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.010S	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
S31.011A	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.011D	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.011S	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, sequela
S31.020A	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.020D	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.020S	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
S31.021A	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.021D	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.021S	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, sequela
S31.030A	Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.030D	Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter

Showing 1–20 of 558

DRG Codes

21 rows

DRG Code	Description
393	Other Digestive System Diagnoses with MCC
394	Other Digestive System Diagnoses with CC
395	Other Digestive System Diagnoses without CC/MCC
604	Trauma to the Skin, Subcutaneous Tissue and Breast with MCC
605	Trauma to the Skin, Subcutaneous Tissue and Breast without MCC
698	Other Kidney and Urinary Tract Diagnoses with MCC
699	Other Kidney and Urinary Tract Diagnoses with CC
700	Other Kidney and Urinary Tract Diagnoses without CC/MCC
729	Other Male Reproductive System Diagnoses with CC/MCC
730	Other Male Reproductive System Diagnoses without CC/MCC
742	Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC
743	Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC
760	Menstrual and Other Female Reproductive System Disorders with CC/MCC
761	Menstrual and Other Female Reproductive System Disorders without CC/MCC
913	Traumatic Injury with MCC
914	Traumatic Injury without MCC
949	Aftercare with CC/MCC
950	Aftercare without CC/MCC
963	Other Multiple Significant Trauma with MCC
964	Other Multiple Significant Trauma with CC

Showing 1–20 of 21

ICD-10-CM Code For Superficial Injury Of Abdomen, Lower Back, Pelvis And External Genitals: Group Overview

S32-FRACTURE-OF-LUMBAR-SPINE-AND-PELVIS

ICD-10-CM Code For Fracture Of Lumbar Spine And Pelvis: Group Overview

S33-DISLOCATION-AND-SPRAIN-LUMBAR-SPINE-PELVIS

ICD-10-CM Code For Dislocation And Sprain Of Joints And Ligaments Of Lumbar Spine And Pelvis: Group Overview

S34-INJURY-OF-LUMBAR-AND-SACRAL-SPINAL-CORD

ICD-10-CM Code For Injury Of Lumbar And Sacral Spinal Cord And Nerves: Group Overview

S35-INJURY-OF-ABDOMINAL-VESSELS

ICD-10-CM Code For Injury Of Blood Vessels At Abdomen Lower Back And Pelvis Level: Group Overview

S36-INJURY-OF-INTRA-ABDOMINAL-ORGANS

ICD-10-CM Code For Injury Of Intra-Abdominal Organs: Group Overview

S37-INJURY-OF-URINARY-AND-PELVIC-ORGANS

ICD-10-CM Code For Injury Of Urinary And Pelvic Organs: Group Overview

S38-CRUSHING-INJURY-AND-TRAUMATIC-AMPUTATION

ICD-10-CM Code For Crushing Injury And Traumatic Amputation Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

S39-OTHER-UNSPECIFIED-ABDOMINAL-PELVIC-INJURIES

ICD-10-CM Code For Other And Unspecified Injuries Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

558 rows

ICD-10-CM Code	Description
S31.000A	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.000D	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.000S	Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, sequela
S31.001A	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.001D	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.001S	Unspecified open wound of lower back and pelvis with penetration into retroperitoneum, sequela
S31.010A	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.010D	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.010S	Laceration without foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
S31.011A	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.011D	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.011S	Laceration without foreign body of lower back and pelvis with penetration into retroperitoneum, sequela
S31.020A	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.020D	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter
S31.020S	Laceration with foreign body of lower back and pelvis without penetration into retroperitoneum, sequela
S31.021A	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, initial encounter
S31.021D	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, subsequent encounter
S31.021S	Laceration with foreign body of lower back and pelvis with penetration into retroperitoneum, sequela
S31.030A	Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum, initial encounter
S31.030D	Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum, subsequent encounter

Showing 1–20 of 558

DRG Codes

21 rows

DRG Code	Description
393	Other Digestive System Diagnoses with MCC
394	Other Digestive System Diagnoses with CC
395	Other Digestive System Diagnoses without CC/MCC
604	Trauma to the Skin, Subcutaneous Tissue and Breast with MCC
605	Trauma to the Skin, Subcutaneous Tissue and Breast without MCC
698	Other Kidney and Urinary Tract Diagnoses with MCC
699	Other Kidney and Urinary Tract Diagnoses with CC
700	Other Kidney and Urinary Tract Diagnoses without CC/MCC
729	Other Male Reproductive System Diagnoses with CC/MCC
730	Other Male Reproductive System Diagnoses without CC/MCC
742	Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC
743	Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC
760	Menstrual and Other Female Reproductive System Disorders with CC/MCC
761	Menstrual and Other Female Reproductive System Disorders without CC/MCC
913	Traumatic Injury with MCC
914	Traumatic Injury without MCC
949	Aftercare with CC/MCC
950	Aftercare without CC/MCC
963	Other Multiple Significant Trauma with MCC
964	Other Multiple Significant Trauma with CC

Showing 1–20 of 21

ICD-10-CM Code For Superficial Injury Of Abdomen, Lower Back, Pelvis And External Genitals: Group Overview

S32-FRACTURE-OF-LUMBAR-SPINE-AND-PELVIS

ICD-10-CM Code For Fracture Of Lumbar Spine And Pelvis: Group Overview

S33-DISLOCATION-AND-SPRAIN-LUMBAR-SPINE-PELVIS

ICD-10-CM Code For Dislocation And Sprain Of Joints And Ligaments Of Lumbar Spine And Pelvis: Group Overview

S34-INJURY-OF-LUMBAR-AND-SACRAL-SPINAL-CORD

ICD-10-CM Code For Injury Of Lumbar And Sacral Spinal Cord And Nerves: Group Overview

S35-INJURY-OF-ABDOMINAL-VESSELS

ICD-10-CM Code For Injury Of Blood Vessels At Abdomen Lower Back And Pelvis Level: Group Overview

S36-INJURY-OF-INTRA-ABDOMINAL-ORGANS

ICD-10-CM Code For Injury Of Intra-Abdominal Organs: Group Overview

S37-INJURY-OF-URINARY-AND-PELVIC-ORGANS

ICD-10-CM Code For Injury Of Urinary And Pelvic Organs: Group Overview

S38-CRUSHING-INJURY-AND-TRAUMATIC-AMPUTATION

ICD-10-CM Code For Crushing Injury And Traumatic Amputation Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

S39-OTHER-UNSPECIFIED-ABDOMINAL-PELVIC-INJURIES

ICD-10-CM Code For Other And Unspecified Injuries Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

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ICD-10-CM S31: Open Wound Of Abdomen, Lower Back, Pelvis And External Genitals Overview

ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

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ICD-10-CM S31: Open Wound Of Abdomen, Lower Back, Pelvis And External Genitals Overview

When to Use

ICD-10-CM Codes

DRG Codes

Related Codes

References

When to Use

ICD-10-CM Codes

DRG Codes

Related Codes

References

ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

Sign up for ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview policy alerts

ICD-10-CM S31: Open Wound Of Abdomen, Lower Back, Pelvis And External Genitals Overview

ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview

Sign up for ICD-10-CM Code For Open Wound Of Abdomen Lower Back Pelvis And External Genitals: Group Overview policy alerts

ICD-10-CM S31: Open Wound Of Abdomen, Lower Back, Pelvis And External Genitals Overview

When to Use

ICD-10-CM Codes

DRG Codes

Related Codes

Which anatomical areas does the ICD-10-CM S31 group cover?

What types of open wounds are included in the S31 codes?

How do the S31 codes indicate encounter type and wound status?

How does accurate coding in the S31 group affect reimbursement and claims?

Which DRG categories are related to S31 open wound diagnoses?

References

When to Use

ICD-10-CM Codes

DRG Codes

Related Codes

Which anatomical areas does the ICD-10-CM S31 group cover?

What types of open wounds are included in the S31 codes?

How do the S31 codes indicate encounter type and wound status?

How does accurate coding in the S31 group affect reimbursement and claims?

Which DRG categories are related to S31 open wound diagnoses?

References