FeNO Monitoring CPT/HCPCS Codes
Here is a sample of the coding reference guide for healthcare providers billing for FeNO monitoring and related services.
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CPT/HCPCS Code1
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Descriptor
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95012
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Nitric oxide expired gas determination
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A4617
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Mouthpiece
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99201-99205*
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New patient office visit for the evaluation and management
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99211-99215*
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Established patient office visit for the evaluation and management
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FeNO and Asthma Coding Guides
For full FeNO or asthma ICD-10 coding reference guides, please download the PDFs below.
FeNO CPT Coding Reference Guide
Download (PDF)
ICD-10-CM Asthma Diagnosis Coding
Download (PDF)
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References:
1. Global Initiative for Asthma (GINA). Global strategy for asthma management and prevention. 2021 update. 2. Kavanagh J et al. Over- and under-diagnosis in asthma. Breathe (Sheff). 2019;15(1):e20-e27. 3. Wang Z et al. Agency for Healthcare Research and Quality (AHRQ). The clinical utility of fractional exhaled nitric oxide (FeNO) in asthma management. Comparative Effectiveness Reviews, 197. 2017. 4. Petsky HL et al. Tailoring asthma treatment on eosinophilic markers (exhaled nitric oxide or sputum eosinophils): a systematic review and meta-analysis. Thorax. 2018;73(12):1110-1119. 5. Dweik RA et al. An official ATS clinical practice guideline: interpretation of exhaled nitric oxide levels (FeNO) for clinical applications. Am J Respir Crit Care Med. 2011;184(5):602-15. 6. NIOX®. Data on File; MKT-DOF-007. 2023. 7. Menzies-Gow A et al. Clinical utility of fractional exhaled nitric oxide in severe asthma management. Eur Respir J. 2020;55(3):1901633. 8. NIOX®. NHS England Asthma data 2022 (AST001). QOF database. Available at; https://www.gpcontract.co.uk/browse/ENG/Asthma/22. Accessed; May 2023.