ICD-10-CM Alphabetic Index · FY 2026 Letter U
Index Terms Starting With U ICD-10-CM
Home › ICD-10-CM Codes List › Index to Diseases and Injuries › UThe letter U section of the FY 2026 Alphabetic Index carries 118 main terms , from Uhl's anomaly or disease to Uvulitis. Terms with a direct code link straight to the code page, cross references point to the main term that holds the codes, and terms with a handful of sub-entries render in full right here. The largest terms open their own full index page.
✓ Built from the official CMS FY 2026 index file Effective Oct 1, 2025 – Sep 30, 2026
All entry types Direct code Cross-references With sub-entries 118 of 118 shown Clear
Uhl's anomaly or disease Code Q24.8 with
bone involvement without evidence of necrosis
L98.436 Ulcerosa scarlatina Code A38.8 Ulcus Sub-entries see also Ulcer duodeni see Ulcer, duodenum
Ulerythema Sub-entries
ophryogenes, congenital
Q84.2 Ullrich (-Bonnevie) (-Turner) syndrome Code Q87.19 See also: Turner's syndrome Ullrich-Feichtiger syndrome Code Q87.0 Ulnar Cross-ref See: condition Ulorrhagia, ulorrhea Code K06.8 Umbilicus, umbilical Cross-ref See: condition obtain
adequate
childcare due to limited financial resources, specified NEC
Z59.87 Unacceptable Sub-entries
Unaffordable transportation Code Z59.82 bed at medical facility
Z75.1 health service-related agencies
Z75.4 medical facilities (at)
Z75.3 due to
Uncinaria americana infestation Code B76.1 Uncongenial work Code Z56.5 Unconscious (ness) Cross-ref See: Coma Under observation Cross-ref See: Observation
Underachievement in school Code Z55.3 Underdevelopment Sub-entries see also Undeveloped
Underdosing Sub-entries Z91.14 Non-billable see also Table of Drugs and Chemicals, categories T36-T50, with final character 6 due to financial hardship of patient
Z91.120 due to patient's age related debility
Z91.130 Underfeeding, newborn Code P92.3 Underfill, endodontic Code M27.53 Underimmunization status Sub-entries Z28.39 Undernourishment Cross-ref See: Malnutrition Undernutrition Cross-ref See: Malnutrition Underweight Sub-entries R63.6 for gestational age see Light for dates
Underwood's disease Code P83.0 Undescended Sub-entries see also Malposition, congenital
Undeveloped, undevelopment Sub-entries see also Hypoplasia cerebral (congenital)
Q02 Undiagnosed (disease) Code R69 Undulant fever Cross-ref See: Brucellosis
Unemployment, anxiety concerning Sub-entries Z56.0 Unequal length (acquired) (limb) Sub-entries see also Deformity, limb, unequal length
leg see also Deformity, limb, unequal length
congenital
Q72.9 Non-billable Unguis incarnatus Code L60.0 Unicornate uterus Sub-entries Q51.4 in pregnancy or childbirth
O34.00 Unicuspid aortic valve (at birth) (congenital) Code Q23.81 Unilateral Sub-entries see also condition
organ or site, congenital NEC see Agenesis, by site
Unilocular heart Code Q20.8 Unimmunized Sub-entries see also Underimmunization status
Union, abnormal Sub-entries see also Fusion
Universal mesentery Code Q43.3 Unreliable transportation Code Z59.82 Unrepairable overhanging of dental restorative materials Code K08.52 Unroofed coronary sinus Code Q21.13 Unsafe transportation Code Z59.82 sample of cytologic smear
Unsoundness of mind Cross-ref See: Psychosis
back NEC see Instability, joint, spine
acquired see Derangement, joint, specified type NEC, hip
joint see Instability, joint
Unsteadiness on feet Code R26.81 Untruthfulness, child problem Code F91.8 Unvaccinated Sub-entries see also Underimmunization status
Unverricht (-Lundborg) disease or epilepsy Cross-ref See: Epilepsy, generalized, idiopathic
Unwanted Sub-entries
multiple moves in the last 12 months
Z59.81 Non-billable in care of non-parental family member
Z62.21 in orphanage or group home
Z62.22 Upper respiratory Cross-ref See: condition intestinal (large) (small)
K59.9 Urachus Sub-entries see also condition
patent or persistent
Q64.4 Urbach-Oppenheim disease (necrobiosis lipoidica diabeticorum) Cross-ref See: E08-E13 with .620
Urbach's lipoid proteinosis Code E78.89 Urbach-Wiethe disease Code E78.89 Urban yellow fever Code A95.1 Urea Sub-entries
blood, high see Uremia
cycle metabolism disorder see Disorder, urea cycle metabolism
with
ectopic or molar pregnancy
O08.4 chronic NOS
N18.9 see also Disease, kidney, chronic Ureter, ureteral Cross-ref See: condition Ureterectasis Cross-ref See: Hydroureter with calculus, kidney
N20.2 with hydronephrosis
N13.2 Ureterocele Sub-entries N28.89 congenital (orthotopic)
Q62.31 Ureterolith, ureterolithiasis Cross-ref See: Calculus, ureter
Ureterostomy Sub-entries
Urethra, urethral Cross-ref See: condition diplococcal (gonococcal)
A54.01 Urethrocele Sub-entries N81.0 with
cystocele see Cystocele
prolapse of uterus see Prolapse, uterus
Urethrolithiasis (with colic or infection) Code N21.1 Urethrorectal Cross-ref See: condition Urethrostomy Sub-entries
Urethrotrigonitis Cross-ref See: Trigonitis
Urethrovaginal Cross-ref See: condition Urgency Sub-entries
hypertensive see Hypertension
Urhidrosis, uridrosis Code L74.8 Uric acid in blood (increased) Code E79.0 Uricacidemia (asymptomatic) Code E79.0 Uricemia (asymptomatic) Code E79.0 Urinary Cross-ref See: condition Urination Sub-entries
blood in see Hematuria
enuresis, nonorganic origin
F98.0 Urinemia Cross-ref See: Uremia
Urinoma, urethra Code N36.8 Uroarthritis, infectious (Reiter's) Cross-ref See: Reiter's disease
Urolithiasis Cross-ref See: Calculus, urinary
Uronephrosis Cross-ref See: Hydronephrosis
Urosepsis - code to condition Term
with angioneurotic edema
T78.3 Non-billable alcohol
F10.90 see also Alcohol, alcoholic, by disorder with
Usher-Senear disease or syndrome Code L10.4 Uterovaginal Cross-ref See: condition Uterovesical Cross-ref See: condition Uveal Cross-ref See: condition Uveitis (anterior) Sub-entries see also Iridocyclitis acute see Iridocyclitis, acute
chronic see Iridocyclitis, chronic
due to toxoplasmosis (acquired)
B58.09 Uveoencephalitis Cross-ref See: Inflammation, chorioretinal
Uveokeratitis Cross-ref See: Iridocyclitis Uvula Cross-ref See: condition Uvulitis (acute) (catarrhal) (chronic) (membranous) (suppurative) (ulcerative) Code K12.2 Related References Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
