- Pili
- Pill roller hand (intrinsic) 736.09
- Pilomatrixoma (M8110/0) - see Neoplasm, skin, benign
- Pilonidal - see condition
- Pimple 709.8
- PIN I (prostatic intraepithelial neoplasia I) 602.3
- PIN II (prostatic intraepithelial neoplasia II) 602.3
- PIN III (prostatic intraepithelial neoplasia III) 233.4
- Pinched nerve - see Neuropathy, entrapment
- Pineal body or gland - see condition
- Pinealoblastoma (M9362/3) 194.4
- Pinealoma (M9360/1) 237.1
- Pineoblastoma (M9362/3) 194.4
- Pineocytoma (M9361/1) 237.1
- Pinguecula 372.51
- Pingueculitis 372.34
- Pinhole meatus (see also Stricture, urethra) 598.9
- Pink
- Pinkus' disease (lichen nitidus) 697.1
- Pinpoint
- Pinselhaare (congenital) 757.4
- Pinta 103.9