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  6. 2026 ICD-10-CM Code S31.64A

2026 ICD-10-CM Diagnosis Code S31.64A

Puncture wound of abdominal wall with foreign body, unspecified flank with penetration into peritoneal cavity

ICD-10-CM Code:
S31.64A
ICD-10 Code for:
Pnctr of abd wall with fb, unsp flank with penet perit cav
Is Billable?
Not Valid for Submission
Code Navigator:

S31.64A is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of puncture wound of abdominal wall with foreign body, unspecified 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 S31.64A 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 Pnctr of abd wall with fb, unsp flank with penet perit cav

Non-specific codes like S31.64A 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 pnctr of abd wall with fb, unsp flank with penet perit cav:

  • Use S31.64AA for initial encounter - BILLABLE CODE

  • Use S31.64AD for subsequent encounter - BILLABLE CODE

  • Use S31.64AS 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

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.
  • Puncture wound of abdominal wall with foreign body, flank NOS, with penetration into peritoneal cavity

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:

    • Puncture
      • flank
        • with
          • penetration into peritoneal cavity
            • with foreign body

Code History

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