ICD-10 Code J96.12 – Chronic respiratory failure with hypercapnia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J96.12 – Chronic respiratory failure with hypercapnia
What it is
J96.12 identifies chronic respiratory failure with elevated carbon dioxide in the blood. Use it when the record shows a long-term failure of ventilation, not an acute, short-lived episode.
Clinical signs
Typical documentation may note persistent hypoventilation, chronic dyspnea, somnolence, or confusion related to CO2 retention. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents chronic respiratory failure and specifically links it to hypercapnia. It is appropriate for stable, ongoing respiratory failure managed over time, including cases with underlying lung disease. If the chart only states respiratory failure without chronicity or hypercapnia, check documentation.
Do not use for
Do not use J96.12 for acute respiratory failure, or for respiratory failure without documented hypercapnia. If the record says hypoxemia only, or the type is unclear, check documentation.
Coding tip
Code the chronic respiratory failure first, and capture hypercapnia only when the provider explicitly documents it.