Summary & Overview

CPT 86039: Antinuclear Antibody (ANA) Titer, Serum

CPT code 86039 denotes the technical laboratory assay to determine the titer of antinuclear antibodies (ANAs) in serum. ANA testing is a foundational diagnostic tool in the workup of suspected autoimmune diseases such as systemic lupus erythematosus and other connective tissue disorders, making this code clinically relevant across inpatient and outpatient laboratory settings nationwide. Payers commonly involved in coverage and claims for this service include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. This publication provides a concise national overview of CPT code 86039, explaining its clinical purpose, typical sites of service, and the payer landscape. Readers will find benchmark context for utilization and billing practice, summaries of common modifiers and service-line considerations, and clinical context to inform coding and documentation alignment. Data not available in the input will be noted where applicable. The content is intended to clarify what CPT code 86039 represents, where the service is performed, and what topics are relevant for payers and billing staff when processing ANA titer technical component claims.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare86039CPTLaboratoryAntinuclear AntibodyANA TiterClinical PathologyTechnical ComponentAutoimmune Testing

Billing Code Overview

CPT code 86039 describes a laboratory technical service that measures the titer of antinuclear antibodies (ANAs) in a patient serum specimen. ANAs are autoantibodies directed against components of the cell nucleus and are commonly assessed when evaluating autoimmune disorders.

Service type: Clinical laboratory test — technical component (analysis of serum specimen)
Typical site of service: Hospital or independent clinical laboratory; specimen collected in an outpatient clinic or hospital and analyzed in a laboratory setting

Clinical & Coding Specifications

Clinical Context

A 34-year-old female presents to the outpatient rheumatology clinic with a 6-month history of fatigue, arthralgias, photosensitive rash, and intermittent low-grade fevers. The ordering clinician documents concern for systemic autoimmune disease, especially systemic lupus erythematosus (SLE). A serum specimen is collected in the clinic or at a phlebotomy station and sent to the clinical laboratory. The laboratory technician performs the technical assay to determine the antinuclear antibody (ANA) titer using an immunofluorescence or other validated methodology. The result (titer and pattern) is reported to the ordering provider and incorporated into further diagnostic evaluation, which may include reflex testing (ENA panel, anti-dsDNA) depending on the titer and clinical protocol. Typical sites of service include hospital outpatient laboratories, independent reference laboratories, and ambulatory clinic laboratories where phlebotomy and specimen transport occur.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When reporting only the professional interpretation component if applicable (rare for purely technical ANA titers).
`TC`	Technical component	When billing only the technical portion of the test performed by the laboratory.
`90`	Reference (outside) laboratory	When the specimen is sent to an outside reference laboratory for performance.
`91`	Repeat clinical diagnostic laboratory test	When a repeat ANA titer is performed on the same day to confirm a result.
`59`	Distinct procedural service	When another unrelated laboratory procedure is reported for the same patient on the same day and needs distinction.
`52`	Reduced services	When the test is partially performed or limited for clinical reasons.
`53`	Discontinued procedure	When specimen collection or analysis is started but discontinued for documented clinical reasons.
`90`	Reference (outside) laboratory	When the test was performed by an independent outside laboratory (listed again for emphasis if billing arrangements vary).
`CR`	Catastrophe/disaster billing	When special billing rules apply during a federally declared disaster (rare).
`QW`	CLIA waived test	When an ANA test method, if performed under a waived CLIA method (uncommon for titers), meets payer requirements.
`QX`	CLIA provider-performed microscopy (PPM)	When a qualified provider performs the test in a PPM setting that meets CLIA criteria.
`XE`	Separate encounter	When the technical service is provided during a separate encounter from other services.
`XU`	Unusual non-overlapping service	When reporting a distinct portion of services not usually billed together.

Taxonomy Code	Specialty	Notes
207RH0000X	Rheumatology	Ordering clinicians who commonly request ANA testing for autoimmune disease evaluation.
208000000X	Pathology	Laboratory pathologists interpret complex immunology results and oversee testing.
207L00000X	Allergy & Immunology	Specialists who evaluate autoimmune and immune-mediated disorders and request ANA.
363LF0000X	Laboratory Director	Clinical laboratory directors and laboratory medicine specialists responsible for test validation.
207Q00000X	Internal Medicine	Primary care and internists who order initial ANA screening for systemic symptoms.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M32.10`	Systemic lupus erythematosus, organ or system involvement unspecified	ANA testing is a cornerstone serologic screen when SLE is suspected.
`M06.9`	Rheumatoid arthritis, unspecified	Autoimmune arthritis evaluation may include ANA to assess overlap syndromes.
`L93.0`	Discoid lupus erythematosus	Cutaneous lupus variants often prompt ANA testing as part of workup.
`M35.9`	Systemic involvement of connective tissue disorder, unspecified	Broad connective tissue disease evaluations use ANA titers in diagnostic algorithms.
`R53.83`	Other fatigue	Non-specific systemic symptoms like fatigue may trigger autoimmune screening including ANA.
`R21`	Rash and other nonspecific skin eruption	Photosensitive or atypical rashes commonly lead to ordering ANA testing.
`M79.6`	Pain in limb	Arthralgias and musculoskeletal pain are common indications for ANA ordering.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`86038`	Antibody; single (e.g., ANA by ELISA), qualitative or semi-quantitative	Alternative method or screening assay for antinuclear antibodies sometimes used before or instead of titering.
`86255`	Antibodies to double-stranded DNA (anti-dsDNA)	Common reflex or follow-up test when ANA is positive and SLE is suspected.
`86235`	Reflex immunoassay for extractable nuclear antigens (ENA) panel	Performed after a positive ANA to identify specific autoantibodies (e.g., Sm, RNP, SSA/SSB).
`80053`	Comprehensive metabolic panel	Frequently ordered concurrently to assess organ function prior to immunosuppressive therapy.
`36415`	Collection of venous blood by venipuncture	The specimen collection procedure performed prior to sending the serum for ANA titer analysis.