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 6: Diseases of the nervous system
- G73.1Lambert-Eaton syndrome in neoplastic disease
- G92.00Immune effector cell-associated neurotoxicity syndrome, grade unspecified
- G92.01Immune effector cell-associated neurotoxicity syndrome, grade 1
- G92.02Immune effector cell-associated neurotoxicity syndrome, grade 2
- G92.03Immune effector cell-associated neurotoxicity syndrome, grade 3
- G92.04Immune effector cell-associated neurotoxicity syndrome, grade 4
- G92.05Immune effector cell-associated neurotoxicity syndrome, grade 5