- Kahler's disease
- Kakke
- Kala-azar
- Kallmann's syndrome
- Kanner's syndrome (autism)
- Kaposi's
- Kartagener's syndrome or triad (sinusitis, bronchiectasis, situs inversus)
- Karyotype
- Kaschin-Beck disease
- Katayama's disease or fever
- Kawasaki's syndrome
- Kayser-Fleischer ring (cornea) (pseudosclerosis)
- Kaznelson's syndrome (congenital hypoplastic anemia)
- Kearns-Sayre syndrome
- Kedani fever
- Kelis
- Kelly (-Patterson) syndrome (sideropenic dysphagia)
- Keloid, cheloid
- Keloma
- Kenya fever
- Keratectasia
- Keratinization of alveolar ridge mucosa
- Keratinized residual ridge mucosa
- Keratitis (nodular) (nonulcerative) (simple) (zonular)
- Keratoacanthoma
- Keratocele
- Keratoconjunctivitis
- Keratoconus
- Keratocyst (dental) (odontogenic)
- Keratoderma, keratodermia (congenital) (palmaris et plantaris) (symmetrical)
- Keratodermatocele
- Keratoglobus
- Keratohemia
- Keratoiritis
- Keratoma
- Keratomalacia
- Keratomegaly
- Keratomycosis
- Keratopathy
- Keratoscleritis, tuberculous
- Keratosis
- Kerato-uveitis
- Kerion (celsi)
- Kernicterus of newborn (not due to isoimmunization)
- Kerunoparalysis
- Keshan disease
- Ketoacidosis
- Ketonuria
- Ketosis NEC
- Kew Garden fever
- Kidney
- Kienböck's disease
- Kimmelstiel (-Wilson) disease
- Kimura disease
- Kink, kinking
- Kinnier Wilson's disease (hepatolenticular degeneration)
- Kissing spine
- Klatskin's tumor
- Klauder's disease
- Klebs' disease
- Klebsiella (K.) pneumoniae, as cause of disease classified elsewhere
- Klein (e)-Levin syndrome
- Kleptomania
- Klinefelter's syndrome
- Klippel's disease
- Klippel-Feil deficiency, disease, or syndrome (brevicollis)
- Klippel-Trenaunay (-Weber) syndrome
- Klumpke (-Déjerine) palsy, paralysis (birth) (newborn)
- Knee
- Knock knee (acquired)
- Knot (s)
- Knotting (of)
- Knuckle pad (Garrod's)
- Koch's
- Koch-Weeks' conjunctivitis
- Köebner's syndrome
- Köenig's disease (osteochondritis dissecans)
- Köhler's disease
- Köhler-Pellegrini-Steida disease or syndrome (calcification, knee joint)
- Koilonychia
- Kojevnikov's, epilepsy
- Koplik's spots
- Kopp's asthma
- Korsakoff's (Wernicke) disease, psychosis or syndrome (alcoholic)
- Korsakov's disease, psychosis or syndrome
- Korsakow's disease, psychosis or syndrome
- Kostmann's disease or syndrome (infantile genetic agranulocytosis)
- Kozhevnikof's epilepsy
- Krabbe's
- Kraepelin-Morel disease
- Kraft-Weber-Dimitri disease
- Kraurosis
- Kreotoxism
- Krukenberg's
- Kufs' disease
- Kugelberg-Welander disease
- Kuhnt-Junius degeneration
- Kümmell's disease or spondylitis
- Kupffer cell sarcoma
- Kuru
- Kussmaul's
- Kwashiorkor
- Kyasanur Forest disease
- Kyphoscoliosis, kyphoscoliotic (acquired)
- Kyphosis, kyphotic (acquired)
- Kyrle disease
ICD-10-CM