ICD-10 Coding for Human Metapneumovirus (HMPV): A Comprehensive Guide

What is Human Metapneumovirus (HMPV)? 

HMPV is a virus that infects the respiratory system, leading to symptoms similar to those of the common cold, flu, or Respiratory Syncytial Virus (RSV). It belongs to the *Pneumoviridae* family and is closely related to RSV. Despite being discovered relatively recently, researchers believe HMPV has been circulating in humans for decades.

Symptoms of HMPV 

The symptoms of HMPV can range from mild to severe, depending on the individual’s age and overall health. Common symptoms include:  

- Cough  

- Fever  

- Nasal congestion  

- Sore throat  

- Shortness of breath  

- Wheezing  

Medical coding for Human Metapneumovirus (HMPV) involves assigning the appropriate ICD-10-CM codes based on the patient's diagnosis, symptoms, and any associated complications. Below is a step-by-step guide to help you accurately code for HMPV:

Identify the Primary Diagnosis

The primary diagnosis for HMPV is coded using the ICD-10-CM code:  

B97.81 Human metapneumovirus as the cause of diseases classified elsewhere.

Example 1: HMPV causing acute bronchitis

PDX: J20.8 (Acute bronchitis due to other specified organisms)

SDX: B97.81 (Human metapneumovirus as the cause of diseases classified elsewhere)

Example 2: HMPV causing pneumonia

PDX: J12.9 (Viral pneumonia, unspecified)

SDX: B97.81 (Human metapneumovirus as the cause of diseases classified elsewhere)

Example Case Study

Patient Presentation: A presents with fever, cough, and wheezing. Laboratory testing confirms HMPV as the cause of acute bronchiolitis.

Primary Code: J21.8 (Acute bronchiolitis due to other specified organisms)

Secondary Code: B97.81 (Human metapneumovirus as the cause of diseases classified elsewhere)

Key Tips for Medical Coders

Ensure the provider’s documentation clearly states HMPV as the cause of the respiratory condition.

Use Combination Codes : If the documentation specifies HMPV as the cause of a condition like bronchitis, use the appropriate combination code (e.g., J20.8).

Stay Updated: Regularly review coding updates and guidelines to ensure compliance