2,667 codes
Unacceptable principal diagnosis codes
Codes that describe a circumstance influencing health status rather than a current illness, so they are unacceptable as the principal diagnosis for an inpatient stay. Source: Medicare Code Editor (MCE) v44, effective October 1, 2026.
Chapter 5: Mental, Behavioral and Neurodevelopmental disorders
- F05Delirium due to known physiological condition
- F06.70Mild neurocognitive disorder due to known physiological condition without behavioral disturbance
- F06.71Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
- F07.0Personality change due to known physiological condition
- F07.89Other personality and behavioral disorders due to known physiological condition
- F17.200Nicotine dependence, unspecified, uncomplicated
- F17.201Nicotine dependence, unspecified, in remission
- F17.210Nicotine dependence, cigarettes, uncomplicated
- F17.211Nicotine dependence, cigarettes, in remission
- F17.220Nicotine dependence, chewing tobacco, uncomplicated
- F17.221Nicotine dependence, chewing tobacco, in remission
- F17.290Nicotine dependence, other tobacco product, uncomplicated
- F17.291Nicotine dependence, other tobacco product, in remission
- F52.9Unspecified sexual dysfunction not due to a substance or known physiological condition
- F81.9Developmental disorder of scholastic skills, unspecified