- Major - see condition
- Mal
- Malabar itch 110.9
- Malabsorption 579.9
- Malacia, bone 268.2
- Malacoplakia
- Malacosteon 268.2
- Maladaptation - see Maladjustment
- Maladie de Roger 745.4
- Maladjustment
- Malaise 780.79
- Malakoplakia - see Malacoplakia
- Malaria, malarial (fever) 084.6
- Malassez's disease (testicular cyst) 608.89
- Malassimilation 579.9
- Maldescent, testis 752.51
- Maldevelopment - see also Anomaly, by site
- Male type pelvis 755.69
- Malformation (congenital) - see also Anomaly
- Malfunction - see also Dysfunction
- Malgaigne's fracture (closed) 808.43
- Malherbe's