- Myelofibrosis 289.83
- Myelogenous - see condition
- Myeloid - see condition
- Myelokathexis 288.09
- Myeloleukodystrophy 330.0
- Myelolipoma (M8870/0) - see Neoplasm, by site, benign
- Myeloma (multiple) (plasma cell) (plasmacytic) (M9730/3) 203.0
- Myelomalacia 336.8
- Myelomata, multiple (M9730/3) 203.0
- Myelomatosis (M9730/3) 203.0
- Myelomeningitis - see Meningoencephalitis
- Myelomeningocele (spinal cord) (see also Spina bifida) 741.9
- Myelopathic - see condition
- Myelopathy (spinal cord) 336.9
- Myelophthisis 284.2
- Myeloproliferative disease (M9960/1) 238.79
- Myeloradiculitis (see also Polyneuropathy) 357.0
- Myeloradiculodysplasia (spinal) 742.59
- Myelosarcoma (M9930/3) 205.3
- Myelosclerosis 289.89
- Myelosis (M9860/3) (see also Leukemia, myeloid) 205.9
- Myesthenia - see Myasthenia