J96.02

Billable

Acute respiratory failure with hypercapnia

HCC Category Mapping

V28HCC 213 — Cardio-Respiratory Failure and Shock

0.000

V24HCC 84 — Cardio-Respiratory Failure and Shock

0.402

ESRDHCC 84 — Cardio-Respiratory Failure and Shock

0.000

What This Code Means

A sudden, life-threatening condition where the lungs cannot remove enough carbon dioxide from the blood, causing dangerously high CO2 levels.

Coding Tips

•Requires documentation of acute onset and confirmed hypercapnia (elevated CO2); verify ABG results showing elevated pCO2
•Distinguish from J96.01 by confirming that hypercapnia, not hypoxia, is the primary gas exchange problem

Clinical Significance

Acute respiratory failure with hypercapnia (Type 2 respiratory failure) is a life-threatening condition where the lungs cannot adequately eliminate carbon dioxide, causing dangerous CO2 accumulation. This typically indicates severe ventilatory pump failure from conditions like COPD exacerbation, neuromuscular disease, or drug overdose. Management differs from hypoxic failure, often requiring bilevel positive airway pressure or mechanical ventilation.

Documentation Requirements

✓Provider documentation explicitly stating acute respiratory failure with hypercapnia
✓ABG results showing PaCO2 > 50 mmHg with acute pH changes (respiratory acidosis)
✓Documentation of acute onset distinguishing from chronic CO2 retention
✓Underlying cause documented and coded (COPD exacerbation, neuromuscular disease, drug overdose, obesity hypoventilation)
✓Treatment plan including ventilatory support mode and settings

Commonly Confused Codes

J96.01 — Acute respiratory failure with hypoxia is Type 1 failure with low oxygen, not high CO2 J96.00 — Acute respiratory failure unspecified should not be used when hypercapnia is documented J96.12 — Chronic respiratory failure with hypercapnia is for stable chronic CO2 retention J96.22 — Acute and chronic respiratory failure with hypercapnia is for acute-on-chronic CO2 retention

Code Hierarchy

└J96Respiratory failure, not elsewhere classified └J96.0Acute respiratory failure └J96.02Acute respiratory failure with hypercapnia

└J96.02Acute respiratory failure with hypercapnia