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Free Medical Coding > ICD10 CM > 2023 ICD-10-CM Diagnosis Codes Index > 2023 ICD-10-CM Index Term Starting With ‘O’

2023 ICD-10-CM Index Term Starting With ‘O’

  • Österreicher-Turner syndrome, Q87.2
  • Obermeyer\’s relapsing fever (European), A68.0
  • Obesity, E66.9
  • Oblique
  • Obliteration
  • Observation (following) (for) (without need for further medical care), Z04.9
  • Obsession, obsessional state, F42.8
  • Obsessive-compulsive neurosis or reaction, F42.8
  • Obstetric embolism, septic
  • Obstetrical trauma (complicating delivery), O71.9
  • Obstipation
  • Obstruction, obstructed, obstructive
  • Obturator
  • Occlusal wear, teeth, K03.0
  • Occlusio pupillae
  • Occlusion, occluded
  • Occult
  • Occupational
  • Ochlophobia
  • Ochronosis (endogenous), E70.29
  • Ocular muscle
  • Oculogyric crisis or disturbance, H51.8
  • Oculomotor syndrome, H51.9
  • Oculopathy
  • Oddi\’s sphincter spasm, K83.4
  • Odontalgia, K08.89
  • Odontoameloblastoma
  • Odontoclasia, K03.89
  • Odontodysplasia, regional, K00.4
  • Odontogenesis imperfecta, K00.5
  • Odontoma (ameloblastic) (complex) (compound) (fibroameloblastic)
  • Odontomyelitis (closed) (open), K04.01
  • Odontorrhagia, K08.89
  • Odontosarcoma, ameloblastic, C41.1
  • Oestriasis
  • Oguchi\’s disease, H53.63
  • Ohara\’s disease
  • OHS (obesity hypoventilation syndrome), E66.2
  • Oidiomycosis
  • Oidium albicans infection
  • Old age (without mention of debility), R54
  • Old myocardial infarction (previous), I25.2
  • Olfactory
  • Oligemia
  • Oligoastrocytoma
  • Oligocythemia, D64.9
  • Oligodendroblastoma
  • Oligodendroglioma
  • Oligodontia
  • Oligoencephalon, Q02
  • Oligohidrosis, L74.4
  • Oligohydramnios, O41.0-
  • Oligohydrosis, L74.4
  • Oligomenorrhea, N91.5
  • Oligophrenia
  • Oligospermia, N46.11
  • Oligotrichia
  • Oliguria, R34
  • Ollier\’s disease, Q78.4
  • Omenotocele
  • Omentitis
  • Omentum, omental
  • Omphalitis (congenital) (newborn), P38.9
  • Omphalocele, Q79.2
  • Omphalomesenteric duct, persistent, Q43.0
  • Omphalorrhagia, newborn, P51.9
  • Omsk hemorrhagic fever, A98.1
  • Onanism (excessive), F98.8
  • Onchocerciasis, onchocercosis, B73.1
  • Oncocytoma
  • Oncovirus, as cause of disease classified elsewhere, B97.32
  • Ondine\’s curse
  • Oneirophrenia, F23
  • Onychauxis, L60.2
  • Onychia
  • Onychitis
  • Onycho-osteodysplasia, Q87.2
  • Onychocryptosis, L60.0
  • Onychodystrophy, L60.3
  • Onychogryphosis, onychogryposis, L60.2
  • Onycholysis, L60.1
  • Onychomadesis, L60.8
  • Onychomalacia, L60.3
  • Onychomycosis (finger) (toe), B35.1
  • Onychophagia, F98.8
  • Onychophosis, L60.8
  • Onychoptosis, L60.8
  • Onychorrhexis, L60.3
  • Onychoschizia, L60.3
  • Onyxis (finger) (toe), L60.0
  • Onyxitis
  • Oophoritis (cystic) (infectional) (interstitial), N70.92
  • Oophorocele, N83.4-
  • Opacity, opacities
  • Opalescent dentin (hereditary), K00.5
  • Open, opening
  • Operational fatigue, F48.8
  • Operative
  • Operculitis
  • Operculum
  • Ophiasis, L63.2
  • Ophthalmia, H10.9
  • Ophthalmitis
  • Ophthalmocele (congenital), Q15.8
  • Ophthalmoneuromyelitis, G36.0
  • Ophthalmoplegia
  • Opioid (s)
  • Opisthognathism, M26.09
  • Opisthorchiasis (felineus) (viverrini), B66.0
  • Opitz\’ disease, D73.2
  • Opiumism
  • Oppenheim-Urbach disease (necrobiosis lipoidica diabeticorum)
  • Oppenheim\’s disease, G70.2
  • Optic nerve
  • Orbit
  • Orchioblastoma, C62.9-
  • Orchitis (gangrenous) (nonspecific) (septic) (suppurative), N45.2
  • Orf (virus disease), B08.02
  • Organic
  • Orgasm
  • Oriental
  • Orifice
  • Origin of both great vessels from right ventricle, Q20.1
  • Ormond\’s disease (with ureteral obstruction), N13.5
  • Ornithine metabolism disorder, E72.4
  • Ornithinemia (Type I) (Type II), E72.4
  • Ornithosis, A70
  • Orotaciduria, oroticaciduria (congenital) (hereditary) (pyrimidine deficiency), E79.8
  • Orthodontics
  • Orthopnea, R06.01
  • Orthopoxvirus, B08.09
  • Os, uterus
  • Osgood-Schlatter disease or osteochondrosis, M92.52-
  • Osler-Rendu disease (-Weber), I78.0
  • Osler\’s nodes, I33.0
  • Osmidrosis, L75.0
  • Osseous
  • Ossification
  • Osteitis
  • Osteo-onycho-arthro-dysplasia, Q87.2
  • Osteo-onychodysplasia, hereditary, Q87.2
  • Osteoarthritis, M19.90
  • Osteoarthropathy (hypertrophic), M19.90
  • Osteoarthrosis (degenerative) (hypertrophic) (joint)
  • Osteoblastoma
  • Osteochondritis
  • Osteochondroarthrosis deformans endemica
  • Osteochondrodysplasia, Q78.9
  • Osteochondrodystrophy, E78.9
  • Osteochondrolysis
  • Osteochondroma
  • Osteochondromatosis, D16.9
  • Osteochondromyxosarcoma
  • Osteochondropathy, M93.90
  • Osteochondrosarcoma
  • Osteochondrosis
  • Osteoclastoma, D48.0
  • Osteodynia
  • Osteodystrophy, Q78.9
  • Osteofibroma
  • Osteofibrosarcoma
  • Osteogenesis imperfecta, Q78.0
  • Osteogenic
  • Osteolysis, M89.50
  • Osteoma
  • Osteomalacia, M83.9
  • Osteomyelitis (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis), M86.9
  • Osteomyelofibrosis, D47.4
  • Osteomyelosclerosis, D75.89
  • Osteonecrosis, M87.9
  • Osteopathia condensans disseminata, Q78.8
  • Osteopathy
  • Osteopenia, M85.8-
  • Osteoperiostitis
  • Osteopetrosis (familial), Q78.2
  • Osteophyte, M25.70
  • Osteopoikilosis, Q78.8
  • Osteoporosis (female) (male), M81.0
  • Osteopsathyrosis (idiopathica), Q78.0
  • Osteoradionecrosis, jaw (acute) (chronic) (lower) (suppurative) (upper), M27.2
  • Osteosarcoma (any form)
  • Osteosclerosis, Q78.2
  • Osteosclerotic anemia, D64.89
  • Osteosis
  • Ostium
  • Ostrum-Furst syndrome, Q75.8
  • Otalgia
  • Otitis (acute), H66.90
  • Otocephaly, Q18.2
  • Otolith syndrome
  • Otomycosis NEC (diffuse), B36.9
  • Otoporosis
  • Otorrhagia (nontraumatic), H92.2-
  • Otorrhea, H92.1-
  • Otosclerosis (general), H80.9-
  • Otospongiosis
  • Otto\’s disease or pelvis, M24.7
  • Outcome of delivery, Z37.9
  • Outlet
  • Ovalocytosis (congenital) (hereditary)
  • Ovarian
  • Ovariocele, N83.4-
  • Ovaritis (cystic)
  • Ovary, ovarian
  • Overactive
  • Overactivity, R46.3
  • Overbite (deep) (excessive) (horizontal) (vertical), M26.29
  • Overbreathing
  • Overconscientious personality, F60.5
  • Overdevelopment
  • Overdistension
  • Overdose, overdosage (drug)
  • Overeating, R63.2
  • Overexertion (effects) (exhaustion), T73.3
  • Overexposure (effects), T73.9
  • Overfeeding
  • Overfill, endodontic, M27.52
  • Overgrowth, bone
  • Overhanging of dental restorative material (unrepairable), K08.52
  • Overheated (places) (effects)
  • Overjet (excessive horizontal), M26.23
  • Overlaid, overlying (suffocation)
  • Overlap, excessive horizontal (teeth), M26.23
  • Overlapping toe (acquired)
  • Overload
  • Overnutrition
  • Overproduction
  • Overprotection, child by parent, Z62.1
  • Overriding
  • Overstrained, R53.83
  • Overuse, muscle NEC, M70.8-
  • Overweight, E66.3
  • Overworked, R53.83
  • Oviduct
  • Ovotestis, Q56.0
  • Ovulation (cycle)
  • Ovum
  • Owren\’s disease or syndrome (parahemophilia), D68.2
  • Ox heart
  • Oxalosis, E72.53
  • Oxaluria, E72.53
  • Oxycephaly, oxycephalic, Q75.0
  • Oxyuriasis, B80
  • Oxyuris vermicularis (infestation), B80
  • Ozena, J31.0