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Free Medical Coding > ICD10 CM > 2025 ICD-10-CM Diagnosis Codes Index > 2025 ICD-10-CM Index Term Starting With ‘I’

2025 ICD-10-CM Index Term Starting With ‘I’

  • I.Q.
  • IBDU (colonic inflammatory bowel dissease unclassified), K52.3
  • ICANS (immune effector cell-associated neurotoxicity syndrome)
  • Ichthyoparasitism due to Vandellia cirrhosa, B88.8
  • Ichthyosis (congenital), Q80.9
  • Ichthyotoxism
  • Icteroanemia, hemolytic (acquired), D59.9
  • Icterus
  • Ictus solaris, solis, T67.01
  • Id reaction (due to bacteria), L30.2
  • Ideation
  • Identity disorder (child), F64.9
  • Idioglossia, F80.0
  • Idiopathic
  • Idiot, idiocy (congenital), F73
  • IgE asthma, J45.909
  • IIAC (idiopathic infantile arterial calcification), Q28.8
  • Ileitis (chronic) (noninfectious), K52.9
  • Ileocolitis, K52.9
  • Ileostomy
  • Ileotyphus
  • Ileum
  • Ileus (bowel) (colon) (inhibitory) (intestine), K56.7
  • Iliac
  • Iliotibial band syndrome, M76.3-
  • Illiteracy, Z55.0
  • Illness, R69
  • Imbalance, R26.89
  • Imbecile, imbecility (I.Q.35-49), F71
  • Imbedding, intrauterine device, T83.39
  • Imbibition, cholesterol (gallbladder), K82.4
  • Imbrication, teeth,, fully erupted, M26.30
  • Imerslund syndrome (-Gräsbeck), D51.1
  • Immature
  • Immaturity (less than 37 completed weeks)
  • Immersion, T75.1
  • Immobile, immobility
  • Immune reconstitution syndrome [IRIS] (inflammatory), D89.3
  • Immunization
  • Immunocompromised NOS, D84.9
  • Immunocytoma, C83.0-
  • Immunodeficiency, D84.9
  • Immunodeficient NOS, D84.9
  • Immunosuppressed NOS, D84.9
  • Immunotherapy (encounter for)
  • Impaction, impacted
  • Impaired, impairment (function)
  • Impediment, speech, R47.9
  • Impending
  • Imperception auditory (acquired)
  • Imperfect
  • Imperfectly descended testis
  • Imperforate (congenital)
  • Impervious (congenital)
  • Impetiginization of dermatoses, L01.1
  • Impetigo (any organism) (any site) (circinate) (contagiosa) (simplex) (vulgaris), L01.00
  • Impingement (on teeth)
  • Implant, endometrial, N80.9
  • Implantation
  • Impotence (sexual), N52.9
  • Impression, basilar, Q75.8
  • Imprisonment, anxiety concerning, Z65.1
  • Improper care (child) (newborn)
  • Improperly tied umbilical cord (causing hemorrhage), P51.8
  • Impulsiveness (impulsive), R45.87
  • Inability to swallow
  • Inaccessible, inaccessibility
  • Inactive
  • Inadequate, inadequacy
  • Inanition, R64
  • Inappropriate
  • Inattention at or after birth
  • Incarceration, incarcerated
  • Incised wound
  • Incision, incisional
  • Inclusion
  • Incompatibility
  • Incompetency, incompetent, incompetence
  • Incomplete
  • Inconclusive
  • Incontinence, R32
  • Incontinentia pigmenti, Q82.3
  • Incoordinate, incoordination
  • Increase, increased
  • Increta placenta, O43.22-
  • Incrustation, cornea, foreign body (lead)(zinc)
  • Incyclophoria, H50.54
  • Incyclotropia
  • Indeterminate sex, Q56.4
  • India rubber skin, Q82.8
  • Indigestion (acid) (bilious) (functional), K30
  • Indirect
  • Induratio penis plastica, N48.6
  • Induration, indurated
  • Inebriety (without dependence)
  • Inefficiency, kidney, N28.9
  • Inelasticity, skin, R23.4
  • Inequality, leg (length) (acquired)
  • Inertia
  • Infancy, infantile, infantilism
  • Infant (s)
  • Infantile
  • Infantilism
  • Infarct, infarction
  • Infecting
  • Infection, infected, infective (opportunistic), B99.9
  • Infective, infectious
  • Infertility
  • Infestation, B88.9
  • Infiltrate, infiltration
  • Infirmity, R68.89
  • Inflammation, inflamed, inflammatory (with exudation)
  • Inflation, lung, imperfect (newborn)
  • Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus), J11.1
  • Influenza-like disease
  • Influenzal
  • Infraction, Freiberg\’s (metatarsal head)
  • Infraeruption of tooth (teeth), M26.34
  • Infusion complication, misadventure, or reaction
  • Ingestion
  • Ingrowing
  • Inguinal
  • Inhalant-induced
  • Inhalation
  • Inhibition, orgasm
  • Inhibitor, systemic lupus erythematosus (presence of), D68.62
  • Iniencephalus, iniencephaly, Q00.2
  • Injection, traumatic jet (air) (industrial) (water) (paint or dye), T70.4
  • Injury, T14.90
  • Inoculation
  • Insanity, insane
  • Insect
  • Insecurity
  • Insensitivity
  • Insertion
  • Insolation (sunstroke), T67.01
  • Insomnia (organic), G47.00
  • Inspiration
  • Inspissated bile syndrome (newborn), P59.1
  • Instability
  • Institutional syndrome (childhood), F94.2
  • Institutionalization, affecting child, Z62.22
  • Insufficiency, insufficient
  • Insufflation, fallopian, Z31.41
  • Insular
  • Insulinoma
  • Insuloma
  • Interference
  • Intermenstrual
  • Intermittent
  • Internal
  • Interrogation
  • Interruption
  • Interstitial
  • Intertrigo, L30.4
  • Intervertebral disc
  • Intestine, intestinal
  • Intolerance
  • Intoxicated NEC (without dependence)
  • Intoxication
  • Intraabdominal testis, testes
  • Intracranial
  • Intrahepatic gallbladder, Q44.1
  • Intraligamentous
  • Intrathoracic
  • Intrauterine contraceptive device
  • Intraventricular
  • Intrinsic deformity
  • Intubation, difficult or failed, T88.4
  • Intumescence, lens (eye) (cataract)
  • Intussusception (bowel) (colon) (enteric) (ileocecal) (ileocolic) (intestine) ( rectum), K56.1
  • Invagination (bowel, colon, intestine or rectum), K56.1
  • Inversion
  • Investigation, Z04.9
  • Involuntary movement, abnormal, R25.9
  • Involution, involutional
  • IRDS (type I), P22.0
  • Irideremia, Q13.1
  • Iridis rubeosis
  • Iridochoroiditis (panuveitis)
  • Iridocyclitis, H20.9
  • Iridocyclochoroiditis (panuveitis)
  • Iridodialysis, H21.53-
  • Iridodonesis, H21.89
  • Iridoplegia (complete) (partial) (reflex), H57.09
  • Iridoschisis, H21.25-
  • Iris
  • Iritis
  • Iron
  • Iron-miner\’s lung, J63.4
  • Irradiated enamel (tooth, teeth), K03.89
  • Irradiation effects, adverse, T66
  • Irreducible, irreducibility
  • Irregular, irregularity
  • Irritable, irritability, R45.4
  • Irritation
  • Ischemia, ischemic, I99.8
  • Ischial spine
  • Ischialgia
  • Ischiopagus, Q89.4
  • Ischium, ischial
  • Ischuria, R34
  • Iselin\’s disease or osteochondrosis
  • Islands of
  • Islet cell tumor, pancreas, D13.7
  • Isoimmunization NEC
  • Isolation, isolated
  • Isoleucinosis, E71.19
  • Isomerism atrial appendages (with asplenia or polysplenia), Q20.6
  • Isosporiasis, isosporosis, A07.3
  • Isovaleric acidemia, E71.110
  • Issue of
  • Itch, itching
  • Ivemark\’s syndrome (asplenia with congenital heart disease), Q89.01
  • Ivory bones, Q78.2
  • Ixodiasis NEC, B88.8