- 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
- Myiasis (cavernous) 134.0
- Myoadenoma, prostate 600.20
- Myoblastoma
- Myocardial - see condition
- Myocardiopathy (congestive) (constrictive) (familial) (idiopathic) (infiltrative) (obstructive) (primary) (restrictive) (sporadic) 425.4
- Myocarditis (fibroid) (interstitial) (old) (progressive) (senile) (with arteriosclerosis) 429.0
- Myocardium, myocardial - see condition
- Myocardosis (see also Cardiomyopathy) 425.4
- Myoclonia (essential) 333.2
- Myoclonic
- Myoclonus (familial essential) (multifocal) (simplex) 333.2
