ICD-10 Coding for Absence of Appendix(K35.2U, Q43.0, Q43.0B)

Learn about ICD-10 coding for absence of appendix, including congenital (Q43.0) and acquired (Z90.89) cases, with documentation requirements and coding tips.

Also known as:
Appendix MissingAppendix Absent
Related ICD-10 Code Ranges

Complete code families applicable to Absence of Appendix

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
Q43.0Congenital absence of appendix
Z90.89Acquired absence of other specified organs

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information

Essential facts and insights aboutAbsence of Appendix

Differential Codes

Alternative codes to consider when ruling out similar conditions

Acquired absence of appendixZ90.89
Congenital absence of appendixQ43.0

Documentation & Coding Risks

Avoid these common issues when documenting Absence of Appendix.

Coding absence based on 'not visualized' imaging reports.

Impact

Clinical: Misleading clinical records., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation

Require imaging confirmation, Verify surgical history

Coding congenital absence without imaging confirmation.

Impact

Reimbursement: Incorrect DRG assignment may occur., Compliance: Non-compliance with ICD-10 guidelines., Data Quality: Inaccurate patient records.

Mitigation

Ensure prenatal imaging confirms absence before coding as congenital.

Coding acquired absence without surgical documentation.

Impact

Reimbursement: Potential denial of claims., Compliance: Failure to meet documentation standards., Data Quality: Misleading patient history.

Mitigation

Verify operative reports before coding Z90.89.

Misclassification of absence type

Impact

Risk of coding congenital absence without proper imaging confirmation.

Mitigation

Implement mandatory imaging review for congenital absence coding.

Frequently Asked Questions