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Home/Diagnosis/ICD-10 Coding for Acute Appendicitis

ICD-10 Coding for Acute Appendicitis

K35.2
K35.3
K35.8

Complete ICD-10-CM coding and documentation guide for icd-10 coding for acute appendicitis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Appendicitis
Inflamed Appendix
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Key Information: ICD-10 Coding for Acute Appendicitis

Essential facts and insights about ICD-10 Coding for Acute Appendicitis

Use ICD-10 code K35.2 for acute appendicitis with generalized peritonitis, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Acute appendicitis with generalized peritonitis

Non-Billable
K35.2
Non-Billable

Diagnostic Criteria

clinical_criteria:
  • • Presence of generalized peritonitis

Applicable To

  • • Generalized peritonitis due to appendicitis

Important Notes

  • • Ensure documentation clearly differentiates between generalized and localized peritonitis.

Acute appendicitis with localized peritonitis

Non-Billable
K35.3
Non-Billable

Applicable To

  • • Localized peritonitis due to appendicitis

Important Notes

  • • Verify the extent of peritonitis through operative and imaging reports.

Acute appendicitis with other complications

Non-Billable
K35.8
Non-Billable

Applicable To

  • • Acute appendicitis with serositis

Important Notes

  • • Query clinician if documentation is unclear about the presence of peritonitis.
Frequently Asked Questions

What is the ICD-10 code for acute appendicitis with generalized peritonitis?

The ICD-10 code for acute appendicitis with generalized peritonitis is K35.2. This code is used when documentation specifies generalized peritonitis due to appendicitis.

How do you code acute appendicitis with serositis?

Use ICD-10 code K35.8 for acute appendicitis with serositis when there is no documentation of peritonitis.

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