ICD-10-CM
- Uhl's anomaly or disease
- Ulcerosa scarlatina
- Ulegyria
- Ullrich-Feichtiger syndrome
- Ulorrhagia, ulorrhea
- Unaffordable transportation
- Uncinaria americana infestation
- Uncinariasis
- Uncongenial work
- Underachievement in school
- Underemployed
- Underfeeding, newborn
- Underfill, endodontic
- Underwood's disease
- Undiagnosed (disease)
- Unextracted dental root
- Unguis incarnatus
- Unhappiness
- Unicuspid aortic valve (at birth) (congenital)
- Unilocular heart
- Universal mesentery
- Unreliable transportation
- Unrepairable overhanging of dental restorative materials
- Unroofed coronary sinus
- Unsafe transportation
- Unsteadiness on feet
- Untruthfulness, child problem
- Urbach's lipoid proteinosis
- Urbach-Wiethe disease
- Urban yellow fever
- Ureteralgia
- Urethralgia
- Urethrolithiasis (with colic or infection)
- Urethrorrhagia
- Urethrorrhea
- Urhidrosis, uridrosis
- Uricacidemia (asymptomatic)
- Uric acid in blood (increased)
- Uricemia (asymptomatic)
- Uricosuria
- Urinoma, urethra
- Urodialysis
- Urosepsis - code to condition
- Usher-Senear disease or syndrome
- Uta
- Uteromegaly
- Uveoparotitis
- Uvulitis (acute) (catarrhal) (chronic) (membranous) (suppurative) (ulcerative)