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Home/Diagnosis/ICD-10 Coding for Diarrhea of Presumed Infectious Origin

ICD-10 Coding for Diarrhea of Presumed Infectious Origin

A09.0
A08.11

Complete ICD-10-CM coding and documentation guide for icd-10 coding for diarrhea of presumed infectious origin includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Infectious Diarrhea
Acute Gastroenteritis
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Key Information: ICD-10 Coding for Diarrhea of Presumed Infectious Origin

Essential facts and insights about ICD-10 Coding for Diarrhea of Presumed Infectious Origin

Use ICD-10 code A09.0 for infectious gastroenteritis and colitis, unspecified, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Infectious gastroenteritis and colitis, unspecified

Non-Billable
A09.0
Non-Billable

Diagnostic Criteria

clinical:
  • • Symptoms consistent with infectious etiology (e.g., fever, recent exposure)
documentation:
  • • Explicit mention of presumed infectious origin

Applicable To

  • • Diarrhea of presumed infectious origin

Important Notes

  • • Ensure documentation specifies presumed infectious origin to avoid defaulting to non-infectious codes.

Acute gastroenteropathy due to norovirus

Billable Code
A08.11
Billable

Diagnostic Criteria

clinical:
  • • Positive stool PCR for norovirus
  • • Symptoms of acute gastroenteritis

Applicable To

  • • Norovirus infection

Important Notes

  • • Ensure lab confirmation of norovirus before using this code.
Ancillary Codes

Additional codes that may be used with this diagnosis

E86.0

Dehydration

Use if dehydration is present as a complication.

Frequently Asked Questions

What is the ICD-10 code for diarrhea of presumed infectious origin?

The ICD-10 code for diarrhea of presumed infectious origin is A09.0, used when the infectious nature is presumed but not confirmed.

How do you document diarrhea of presumed infectious origin?

Document symptoms, exposure history, and presumed infectious etiology to support the use of A09.0.

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