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  6. 2026 ICD-10-CM Code S31.606

2026 ICD-10-CM Diagnosis Code S31.606

Unspecified open wound of abdominal wall, right flank with penetration into peritoneal cavity

ICD-10-CM Code:
S31.606
ICD-10 Code for:
Unsp opn wnd abd wall, right flank with penet perit cav
Is Billable?
Not Valid for Submission
Code Navigator:

S31.606 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 abdominal wall, right flank with penetration into peritoneal cavity. 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.

Unspecified diagnosis codes like S31.606 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 abd wall, right flank with penet perit cav

Non-specific codes like S31.606 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 abd wall, right flank with penet perit cav:

  • Use S31.606A for initial encounter - BILLABLE CODE

  • Use S31.606D for subsequent encounter - BILLABLE CODE

  • Use S31.606S for sequela - BILLABLE CODE

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

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).

Index of External Cause of Injuries

References found for this diagnosis code in the External Cause of Injuries Index:

    • Wound, open
      • flank
        • right
          • with penetration into peritoneal cavity

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026