What is the ICD-10 code for an intra-abdominal abscess?

The ICD-10 code for a peritoneal abscess, a type of intra-abdominal abscess, is K65.1. If the abscess is due to diverticulitis, use K57.20.

How do you code an abscess secondary to diverticulitis?

For an abscess secondary to diverticulitis, sequence K57.20 first, followed by K65.1 for the peritoneal abscess.

ICD-10 Coding for Intra-abdominal Abscess(K65.1, K35.2, K57.20)

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Comprehensive guide on ICD-10 coding for intra-abdominal abscesses, including code relationships, documentation requirements, and common pitfalls.

Also known as:

Peritoneal AbscessAbdominal Abscess

Related ICD-10 Code Ranges

Complete code families applicable to Intra-abdominal Abscess

K00-K95Primary Range

Diseases of the digestive system

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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
K65.1	Peritoneal abscess	Use when imaging confirms a peritoneal abscess unrelated to organ-specific pathology.	CT or MRI showing peritoneal fluid collection Elevated white blood cell count
K57.20	Diverticulitis of large intestine with perforation and abscess	Use when diverticulitis is the primary condition leading to abscess formation.	Documentation of perforated diverticulitis with abscess formation

Primary ICD-10-CM Codes

Peritoneal abscess

K65.1Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Intestinal abscessK63.1

Peritoneal abscessK65.1

Documentation & Coding Risks

Avoid these common issues when documenting Intra-abdominal Abscess.

Lack of specific abscess location in documentation

Impact

Clinical: Potential misdiagnosis, Regulatory: Non-compliance with coding standards, Financial: Denied claims due to insufficient documentation

Mitigation

Ensure imaging reports specify abscess location, Include detailed clinical notes

Incorrect sequencing of K65.1 and K57.20

Impact

Reimbursement: Incorrect sequencing can lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Sequence K57.20 before K65.1 when diverticulitis is present.

Incorrect code sequencing

Impact

Improper sequencing of primary and secondary codes.

Mitigation

Follow coding guidelines for sequencing.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with K65.1.

Primary Code

K65.1

Peritoneal abscess

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ICD-10 codes4

Coding risks3

FAQs2

ICD-10 Coding for Intra-abdominal Abscess(K65.1, K35.2, K57.20)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for an intra-abdominal abscess?

How do you code an abscess secondary to diverticulitis?

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