What is the ICD-10 code for infectious colitis?

The ICD-10 code for unspecified infectious colitis is A09. For specific causes like C. difficile, use A04.72.

How do you code C. difficile colitis?

For C. difficile colitis, use ICD-10 code A04.72. Ensure documentation includes positive test results.

ICD-10 Coding for Infectious Colitis(A09, A04.72, A04.71)

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Learn about ICD-10 coding for infectious colitis, including specific codes for C. difficile and CMV colitis. Ensure accurate documentation and billing.

Also known as:

Infective ColitisBacterial ColitisViral Colitis

Related ICD-10 Code Ranges

Complete code families applicable to Infectious Colitis

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 the causative organism is not identified.	Clinical presentation of diarrhea abdominal pain and fever without specific organism identification.
A04.72	Enterocolitis due to Clostridium difficile, not specified as recurrent	Use when C. difficile is confirmed as the causative organism.	Positive stool test for C. difficile toxin B or PCR. Clinical symptoms of diarrhea and abdominal pain.
A08.3	Viral enteritis	Use when viral etiology, such as CMV, is confirmed.	Biopsy showing CMV inclusions. Positive immunohistochemical staining for CMV.

Primary ICD-10-CM Codes

Infectious gastroenteritis and colitis, unspecified

A09Billable

Enterocolitis due to Clostridium difficile, not specified as recurrent

A04.72Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Noninfective gastroenteritis and colitis, unspecifiedK52.9

Recurrent C. difficile enterocolitisA04.71

Bacterial intestinal infection, unspecifiedA04.9

Documentation & Coding Risks

Avoid these common issues when documenting Infectious Colitis.

Vague documentation of colitis without organism identification.

Impact

Clinical: Inaccurate treatment and management., Regulatory: Non-compliance with coding standards., Financial: Potential underpayment due to incorrect DRG.

Mitigation

Ensure lab results are reviewed and documented., Clarify diagnosis with specific organism.

Using A09 for confirmed C. difficile infection.

Impact

Reimbursement: Incorrect DRG assignment leading to potential revenue loss., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Use A04.72 when C. difficile is confirmed.

DRG Validation

Impact

Incorrect coding of infectious colitis can lead to DRG audits.

Mitigation

Ensure accurate organism identification and documentation.

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 codes7

Coding risks3

FAQs2

ICD-10 Coding for Infectious Colitis(A09, A04.72, A04.71)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for infectious colitis?

How do you code C. difficile colitis?

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