ICD-10-CM
ICD-10 codes by condition: O
29 common terms and 437 CDC index terms that start with O.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
Common terms
- ObesityE66.9
- Obsessive-compulsive disorderF42.9
- Obstructive sleep apneaG47.33
- OCDF42.9
- Ogilvie syndromeK59.81
- OmphalitisP38.9
- OnchocerciasisB73.1
- OnychogryphosisL60.2
- OnychomycosisB35.1
- OophoritisN70.92
- Open-angle glaucomaH40.10X0
- Opioid dependenceF11.20
- OpisthorchiasisB66.0
- Oral thrushB37.0
- OrchitisN45.2
- Orthostatic hypotensionI95.1
- OsteoarthritisM19.90
- Osteoarthritis of hipM16.9
- Osteoarthritis of kneeM17.9
- OsteomyelitisM86.9
- OsteopeniaM85.80
- OsteopetrosisQ78.2
- OsteoporosisM81.0
- Osteoporosis screeningZ13.820
- Otitis externaH60.90
- Otitis mediaH66.90
- Otitis media with effusionH65.90
- Ovarian cancerC56.9
- Ovarian cystN83.209
CDC index terms, page 1 of 2
- Obermeyer S Relapsing Fever European
- Obesity Adrenal
- Obesity Constitutional
- Obesity Dietary Counseling And Surveillance
- Obesity Drug Induced
- Obesity Endocrine
- Obesity Endogenous
- Obesity Exogenous
- Obesity Familial
- Obesity Glandular
- Obesity Hypoventilation Syndrome Ohs
- Obesity Morbid
- Obesity Nutritional
- Obesity Pituitary
- Obesity Severe
- Obesity Specified Type Nec
- Obesity With Alveolar Hypoventilation
- Obliteration Appendix Lumen
- Obliteration Artery
- Obliteration Bile Duct Noncalculous
- Obliteration Common Duct Noncalculous
- Obliteration Disease Arteriolar
- Obliteration Endometrium
- Obliteration Fallopian Tube
- Obliteration Lymphatic Vessel
- Obliteration Ureter
- Obliteration Vein
- Obliteration Vestibule Oral
- Observation Following For Without Need For Further Medical Care
- Observation Following For Without Need For Further Medical Care Accident Nec
- Observation Following For Without Need For Further Medical Care Adverse Effect O
- Observation Following For Without Need For Further Medical Care Criminal Assault
- Observation Following For Without Need For Further Medical Care Disease Specifie
- Observation Following For Without Need For Further Medical Care Following Work A
- Observation Following For Without Need For Further Medical Care Forced Labor Exp
- Observation Following For Without Need For Further Medical Care Forced Sexual Ex
- observation-following-for-without-need-for-further-medical-care-suicide-attempt-
- Observation Following For Without Need For Further Medical Care Toxic Effects Fr
- Obsession Obsessional State
- Obsession Obsessional State Mixed Thoughts And Acts
- Obsessive Compulsive Neurosis Or Reaction
- Obstetrical Trauma Complicating Delivery
- Obstetrical Trauma Complicating Delivery Specified Type Nec
- Obstetrical Trauma Complicating Delivery With Or Following Ectopic Or Molar Preg
- Obstruction Obstructed Obstructive Airway
- Obstruction Obstructed Obstructive Ampulla Of Vater
- Obstruction Obstructed Obstructive Aortoiliac
- Obstruction Obstructed Obstructive Aqueduct Of Sylvius
- Obstruction Obstructed Obstructive Band Intestinal
- Obstruction Obstructed Obstructive Bile Duct Or Passage Common Hepatic Noncalcul
- Obstruction Obstructed Obstructive Biliary Duct Tract
- Obstruction Obstructed Obstructive Bladder Neck Acquired
- Obstruction Obstructed Obstructive Bronchus
- Obstruction Obstructed Obstructive Cardia
- Obstruction Obstructed Obstructive Caval Veins Inferior Superior
- Obstruction Obstructed Obstructive Circulatory
- Obstruction Obstructed Obstructive Common Duct Noncalculous
- Obstruction Obstructed Obstructive Duodenum
- Obstruction Obstructed Obstructive Ejaculatory Duct
- Obstruction Obstructed Obstructive Esophagus
- Obstruction Obstructed Obstructive Fallopian Tube Bilateral
- Obstruction Obstructed Obstructive Fecal
- Obstruction Obstructed Obstructive Foramen Of Monro Congenital
- Obstruction Obstructed Obstructive Gallbladder
- Obstruction Obstructed Obstructive Gastric Outlet
- Obstruction Obstructed Obstructive Hepatic
- Obstruction Obstructed Obstructive Hepatobiliary
- Obstruction Obstructed Obstructive Iliofemoral Artery
- Obstruction Obstructed Obstructive Intestine
- Obstruction Obstructed Obstructive Kidney Calices
- Obstruction Obstructed Obstructive Lacteal With Steatorrhea
- Obstruction Obstructed Obstructive Larynx Nec
- Obstruction Obstructed Obstructive Lung
- Obstruction Obstructed Obstructive Lymphatic
- Obstruction Obstructed Obstructive Nasal
- Obstruction Obstructed Obstructive Nasopharynx
- Obstruction Obstructed Obstructive Nose
- Obstruction Obstructed Obstructive Pancreatic Duct
- Obstruction Obstructed Obstructive Parotid Duct Or Gland
- Obstruction Obstructed Obstructive Pelviureteral Junction
- Obstruction Obstructed Obstructive Pharynx
- Obstruction Obstructed Obstructive Portal Circulation Vein
- Obstruction Obstructed Obstructive Pulmonary Valve Heart
- Obstruction Obstructed Obstructive Pyelonephritis Chronic
- Obstruction Obstructed Obstructive Rectum
- Obstruction Obstructed Obstructive Renal
- Obstruction Obstructed Obstructive Respiratory
- Obstruction Obstructed Obstructive Retinal Vessels
- Obstruction Obstructed Obstructive Salivary Duct Any
- Obstruction Obstructed Obstructive Sinus Accessory Nasal
- Obstruction Obstructed Obstructive Stensen S Duct
- Obstruction Obstructed Obstructive Stomach Nec
- Obstruction Obstructed Obstructive Submandibular Duct
- Obstruction Obstructed Obstructive Submaxillary Gland
- Obstruction Obstructed Obstructive Thoracic Duct
- Obstruction Obstructed Obstructive Trachea
- Obstruction Obstructed Obstructive Tracheostomy Airway
- Obstruction Obstructed Obstructive Upper Respiratory Congenital
- Obstruction Obstructed Obstructive Ureter Functional Pelvic Junction Nec
- Obstruction Obstructed Obstructive Urethra Nec
- Obstruction Obstructed Obstructive Urinary Moderate
- Obstruction Obstructed Obstructive Uropathy
- Obstruction Obstructed Obstructive Uterus
- Obstruction Obstructed Obstructive Vagina
- Obstruction Obstructed Obstructive Vein Venous
- Obstruction Obstructed Obstructive Vena Cava Inferior Superior
- Obstruction Obstructed Obstructive Vesical Nec
- Obstruction Obstructed Obstructive Vesicourethral Orifice
- Obstruction Obstructed Obstructive Vessel Nec
- Occlusal Wear Teeth
- Occlusion Occluded Anus
- Occlusion Occluded Aortoiliac Chronic
- Occlusion Occluded Aqueduct Of Sylvius
- Occlusion Occluded Bile Duct Common Hepatic Noncalculous
- Occlusion Occluded Centric Of Teeth
- Occlusion Occluded Choanal
- Occlusion Occluded Fallopian Tube
- Occlusion Occluded Gingiva Traumatic
- Occlusion Occluded Hymen
- Occlusion Occluded Iliac Artery
- Occlusion Occluded Lung
- Occlusion Occluded Lymph Or Lymphatic Channel
- Occlusion Occluded Mammary Duct
- Occlusion Occluded Mesenteric Artery Embolic Thrombotic
- Occlusion Occluded Nose
- Occlusion Occluded Oviduct
- Occlusion Occluded Posterior Lingual Of Mandibular Teeth
- Occlusion Occluded Pylorus Adult
- Occlusion Occluded Renal Artery
- Occlusion Occluded Teeth Mandibular Posterior Lingual
- Occlusion Occluded Thoracic Duct
- Occlusion Occluded Tubal
- Occlusion Occluded Ureter Complete Partial
- Occlusion Occluded Ureteropelvic Junction
- Occlusion Occluded Ureterovesical Orifice
- Occlusion Occluded Uterus
- Occlusion Occluded Vagina
- Occlusion Occluded Vascular Nec
- Occlusion Occluded Ventricle Brain Nec
- Occlusion Occluded Vessel Blood
- Occlusion Occluded Vulva
- Occult Blood In Feces Stools
- Occupational Problems Nec
- Ochronosis Endogenous
- Oculogyric Crisis Or Disturbance
- Oculogyric Crisis Or Disturbance Psychogenic
- Oculomotor Syndrome
- Oculopathy Syphilitic Nec
- Oddi S Sphincter Spasm
- Odontalgia
- Odontoclasia
- Odontodysplasia Regional
- Odontogenesis Imperfecta
- Odontomyelitis Closed Open
- Odontomyelitis Closed Open Irreversible
- Odontomyelitis Closed Open Reversible
- Odontorrhagia
- Odontosarcoma Ameloblastic
- Odontosarcoma Ameloblastic Upper Jaw Bone
- Oguchi S Disease
- Ohs Obesity Hypoventilation Syndrome
- Old Age Without Mention Of Debility
- Old Previous Myocardial Infarction
- Oligoastrocytoma Unspecified Site
- Oligocythemia
- Oligodendroblastoma Unspecified Site
- Oligodendroglioma Unspecified Site
- Oligoencephalon
- Oligohidrosis
- Oligohydrosis
- Oligomenorrhea
- Oligomenorrhea Primary
- Oligomenorrhea Secondary
- Oligophrenia Phenylpyruvic
- Oligospermia
- Oliguria
- Oliguria Postprocedural
- Oliguria Puerperal
- Oliguria With Complicating Or Following Ectopic Or Molar Pregnancy
- Ollier S Disease
- Omphalitis Congenital Newborn Not Of Newborn
- Omphalitis Congenital Newborn Tetanus
- Omphalitis Congenital Newborn With Mild Hemorrhage
- Omphalitis Congenital Newborn Without Hemorrhage
- Omphalocele
- Omphalomesenteric Duct Persistent
- Omphalorrhagia Newborn
- Omsk Hemorrhagic Fever
- Onanism Excessive
- Onchocerciasis Onchocercosis Eye Nec
- Onchocerciasis Onchocercosis Eyelid
- Oncovirus As Cause Of Disease Classified Elsewhere
- Oneirophrenia
- Onychauxis
- Onychauxis Congenital
- Onychia Candidal
- Onychia Dermatophytic
- Onycho Osteodysplasia
- Onychocryptosis
- Onychodystrophy
- Onychodystrophy Congenital
- Onycholysis
- Onychomadesis
- Onychomalacia
- Onychophagia
- Onychophosis
- Onychoptosis
- Onychorrhexis
- Onychorrhexis Congenital
- Onychoschizia
- Onyxis Finger Toe
- Oophoritis Cystic Infectional Interstitial Acute
- Oophoritis Cystic Infectional Interstitial Chronic
- Oophoritis Cystic Infectional Interstitial With Salpingitis
- Opacity Opacities Enamel Teeth Fluoride Nonfluoride
- Opalescent Dentin Hereditary
- Open Opening Margin On Tooth Restoration
- Open Opening Restoration Margins Of Tooth
- Operational Fatigue
- Ophiasis
- Ophthalmia
- Ophthalmia Blennorrhagic Gonococcal Neonatorum
- Ophthalmia Diphtheritic
- Ophthalmia Egyptian
- Ophthalmia Gonococcal Neonatorum
- Ophthalmia Neonatorum Newborn
- Ophthalmocele Congenital
- Ophthalmoneuromyelitis
- Ophthalmoplegia Ataxia Areflexia
- Ophthalmoplegia Exophthalmic
- Ophthalmoplegia Supranuclear Progressive
- Opisthognathism
- Opitz Disease
- Oppenheim S Disease
- Opportunistic Salpingectomy
- Orchitis Gangrenous Nonspecific Septic Suppurative Blennorrhagic Gonococcal Acut
- Orchitis Gangrenous Nonspecific Septic Suppurative Chlamydial
- Orchitis Gangrenous Nonspecific Septic Suppurative Filarial
- Orchitis Gangrenous Nonspecific Septic Suppurative Gonococcal Acute Chronic
- Orchitis Gangrenous Nonspecific Septic Suppurative Mumps
- Orchitis Gangrenous Nonspecific Septic Suppurative Syphilitic
- Orchitis Gangrenous Nonspecific Septic Suppurative Tuberculous
- Orf Virus Disease
- Organic Brain Syndrome
- Organic Mental Disorder
- Organic Psychosis
- Orgasm Anejaculatory
- Oriental Bilharziasis
- Oriental Schistosomiasis
- Origin Of Both Great Vessels From Right Ventricle
- Ormond S Disease With Ureteral Obstruction
- Ormond S Disease With Ureteral Obstruction With Infection
- Ornithine Metabolism Disorder
- Ornithinemia Type I Type Ii
- Ornithosis
- Orotaciduria Oroticaciduria Congenital Hereditary Pyrimidine Deficiency
- Orotaciduria Oroticaciduria Congenital Hereditary Pyrimidine Deficiency Anemia
- Orthodontics Adjustment
- Orthodontics Fitting
- Orthopnea
- Orthopoxvirus
- Osler S Nodes
- Osler Weber Rendu Disease
- Osmidrosis
- Ossification Bronchial
- Ossification Diaphragm
- Ossification Falx Cerebri
- Ossification Fontanel Premature
- Ossification Larynx
- Ossification Meninges Cerebral Spinal
- Ossification Penis
- Ossification Sclera
- Ossification Trachea
- Osteitis Alveolar
- Osteitis Condensans
- Osteitis Deformans
- Osteitis Due To Yaws
- Osteitis Fragilitans
- Osteitis Jaw Acute Chronic Lower Suppurative Upper
- Osteitis Parathyroid
- Osteitis Tuberculosa
- Osteo Onycho Arthro Dysplasia
- Osteo Onychodysplasia Hereditary
- Osteoarthritis Generalized Multiple Joints
- Osteoarthritis Hip
- Osteoarthritis Knee
- Osteoarthritis Post Traumatic Nec
- Osteoarthritis Primary
- Osteoarthritis Secondary
- Osteoarthritis Specified Site Nec
- Osteoarthropathy Hypertrophic
- Osteoarthropathy Hypertrophic Specified Type Nec
- Osteoarthrosis Degenerative Hypertrophic Joint Deformans Alkaptonurica
- Osteoarthrosis Degenerative Hypertrophic Joint Erosive
- Osteoarthrosis Degenerative Hypertrophic Joint Generalized
- Osteoarthrosis Degenerative Hypertrophic Joint Polyarticular
- Osteochondritis Dissecans
- Osteochondritis Juvenile
- Osteochondritis Syphilitic Congenital Early
- Osteochondrodysplasia