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 10: Diseases of the respiratory system
- J12.82Pneumonia due to coronavirus disease 2019
- J34.8200Internal nasal valve collapse, unspecified
- J34.8201Internal nasal valve collapse, static
- J34.8202Internal nasal valve collapse, dynamic
- J34.8210External nasal valve collapse, unspecified
- J34.8211External nasal valve collapse, static
- J34.8212External nasal valve collapse, dynamic
- J34.829Nasal valve collapse, unspecified
- J93.12Secondary spontaneous pneumothorax