What is the ICD-10 code for vomiting and diarrhea?

The ICD-10 code for infectious gastroenteritis causing vomiting and diarrhea is A09. For non-infectious causes, use K52.9.

How do you code vomiting and diarrhea in ICD-10?

Code A09 for infectious causes confirmed by lab tests. Use K52.9 for non-infectious causes. Symptom codes like R11.2 can be used when no specific diagnosis is made.

ICD-10 Coding for Vomiting and Diarrhea(A09, K52.9, E86.0)

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Explore ICD-10 codes for vomiting and diarrhea, including A09 for infectious gastroenteritis and K52.9 for non-infectious causes. Learn about documentation requirements and coding tips.

Also known as:

GastroenteritisStomach FluAcute Diarrhea

Related ICD-10 Code Ranges

Complete code families applicable to Vomiting and Diarrhea

A00-B99Primary Range

Certain infectious and parasitic diseases

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
A09	Infectious gastroenteritis and colitis, unspecified	Use when an infectious cause of gastroenteritis is confirmed.	Stool PCR or culture confirming infectious agent Clinical presentation of fever vomiting and diarrhea
K52.9	Noninfective gastroenteritis and colitis, unspecified	Use when non-infectious causes are confirmed and infectious causes are ruled out.	Negative infectious workup Clinical history of dietary or allergic cause
R11.2	Nausea with vomiting, unspecified	Use when vomiting is present but no specific diagnosis is made.	Clinical presentation of nausea and vomiting

Primary ICD-10-CM Codes

Infectious gastroenteritis and colitis, unspecified

A09Billable

Noninfective gastroenteritis and colitis, unspecified

K52.9Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Noninfective gastroenteritis and colitis, unspecifiedK52.9

Use when non-infectious etiology is documented.

Infectious gastroenteritis and colitis, unspecifiedA09

Use when infectious etiology is confirmed.

Documentation & Coding Risks

Avoid these common issues when documenting Vomiting and Diarrhea.

Failure to document dehydration status

Impact

Clinical: May lead to inadequate treatment, Regulatory: Non-compliance with documentation standards, Financial: Potential loss of reimbursement for dehydration treatment

Mitigation

Always assess and document dehydration signs, Include capillary refill time and mucous membrane status

Using symptom codes as primary diagnosis when a specific cause is known

Impact

Reimbursement: May lead to lower reimbursement rates, Compliance: Non-compliance with coding guidelines, Data Quality: Inaccurate representation of patient conditions

Mitigation

Always code the underlying cause first, such as A09 for infectious gastroenteritis.

Incorrect sequencing of codes

Impact

Using symptom codes as primary diagnosis instead of underlying cause

Mitigation

Educate coders on sequencing rules and provide regular audits

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with A09.

Primary Code

A09

Infectious gastroenteritis and colitis, unspecified

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ICD-10 codes5

Coding risks3

FAQs2

ICD-10 Coding for Vomiting and Diarrhea(A09, K52.9, E86.0)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for vomiting and diarrhea?

How do you code vomiting and diarrhea in ICD-10?

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