ICD-10 Guide

Immunity Status Testing Antibody

ICD-10 Coding for Immunity Status Testing Antibody(Z01.84)

PRIMARY SPECIALTYPrimary Care

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Immunity Status Testing Antibody?

Essential facts and insights about Immunity Status Testing Antibody

Key Clinical Considerations:

Presence of recurrent infections or unusual infections
Serological tests for specific antibodies (e.g., IgG, IgM)
Lymphadenopathy, splenomegaly, or other signs of immune dysfunction

Clinical Information

Clinical Criteria & Documentation Requirements

Patient history of infections and immune-related issues
Results of antibody tests and interpretation
Clinical rationale for testing and follow-up plan

Coding Guidelines

Usage Guidelines & Examples

Follow guidelines for appropriate use of immunodeficiency codes.
Common errors include using incorrect codes for non-specific immune issues.

Code Exclusions

Important Exclusions

Acquired immunodeficiency syndrome (AIDS) - use B20
Congenital immunodeficiencies - use D80-D83

Specialty Focus

Primary Specialty

Primary Care

Specialty Applications

Patients with recurrent infections, autoimmune disorders, or immunodeficiencies
Primary care settings, specialty clinics, and laboratories

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document patient history, test results, and clinical rationale.

What are the billing considerations?

Ensure correct coding based on test results and patient history.

Immunity Status Testing Antibody

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?

Immunity Status Testing Antibody

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?