Diagnoses A–Z
Browse all 97,584 ICD-10-CM diagnosis codes organized into 22 chapters. Each code includes official CMS description, chapter context, and linked sibling codes.
Source: CMS ICD-10-CM 2025 official release (public domain).
Certain infectious and parasitic diseases
- A00Cholera
- A01Typhoid and paratyphoid fevers
- A01.0Typhoid fever
- A02Other salmonella infections
- A02.2Localized salmonella infections
- A03Shigellosis
- A04Other bacterial intestinal infections
- A04.7Enterocolitis due to Clostridium difficile
- A05Oth bacterial foodborne intoxications, NEC
- A06Amebiasis
- A06.8Amebic infection of other sites
- A07Other protozoal intestinal diseases
Neoplasms
- C00Malignant neoplasm of lip
- C02Malignant neoplasm of other and unspecified parts of tongue
- C03Malignant neoplasm of gum
- C04Malignant neoplasm of floor of mouth
- C05Malignant neoplasm of palate
- C06Malignant neoplasm of other and unspecified parts of mouth
- C06.8Malignant neoplasm of ovrlp sites of and unsp parts of mouth
- C08Malignant neoplasm of other and unsp major salivary glands
- C09Malignant neoplasm of tonsil
- C10Malignant neoplasm of oropharynx
- C11Malignant neoplasm of nasopharynx
- C13Malignant neoplasm of hypopharynx
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- D50Iron deficiency anemia
- D51Vitamin B12 deficiency anemia
- D52Folate deficiency anemia
- D53Other nutritional anemias
- D55Anemia due to enzyme disorders
- D55.2Anemia due to disorders of glycolytic enzymes
- D56Thalassemia
- D57Sickle-cell disorders
- D57.0Hb-SS disease with crisis
- D57.2Sickle-cell/Hb-C disease
- D57.21Sickle-cell/Hb-C disease with crisis
- D57.4Sickle-cell thalassemia
Endocrine, nutritional and metabolic diseases
- E00Congenital iodine-deficiency syndrome
- E01Iodine-deficiency related thyroid disorders and allied cond
- E03Other hypothyroidism
- E04Other nontoxic goiter
- E05Thyrotoxicosis [hyperthyroidism]
- E05.0Thyrotoxicosis with diffuse goiter
- E05.1Thyrotoxicosis with toxic single thyroid nodule
- E05.2Thyrotoxicosis with toxic multinodular goiter
- E05.3Thyrotoxicosis from ectopic thyroid tissue
- E05.4Thyrotoxicosis factitia
- E05.8Other thyrotoxicosis
- E05.9Thyrotoxicosis, unspecified
Mental, behavioral and neurodevelopmental disorders
- F01Vascular dementia
- F01.5Vascular dementia, unspecified severity
- F01.51Vascular dementia, unsp severity, with behavioral disturb
- F01.AVascular dementia, mild
- F01.A1Vascular dementia, mild, with behavioral disturbance
- F01.BVascular dementia, moderate
- F01.B1Vascular dementia, moderate, with behavioral disturbance
- F01.CVascular dementia, severe
- F01.C1Vascular dementia, severe, with behavioral disturbance
- F02Dementia in other diseases classified elsewhere
- F02.8Dementia in other diseases classd elswhr, unsp severity
- F02.81Dem in other dis classd elswhr, unsp sev, with beh distrb
Diseases of the nervous system
- G00Bacterial meningitis, not elsewhere classified
- G03Meningitis due to other and unspecified causes
- G04Encephalitis, myelitis and encephalomyelitis
- G04.0Acute disseminated encephalitis and encephalomyelitis (ADEM)
- G04.3Acute necrotizing hemorrhagic encephalopathy
- G04.8Other encephalitis, myelitis and encephalomyelitis
- G04.9Encephalitis, myelitis and encephalomyelitis, unspecified
- G05Encphlts, myelitis & encephalomyelitis in dis classd elswhr
- G06Intracranial and intraspinal abscess and granuloma
- G11Hereditary ataxia
- G11.1Early-onset cerebellar ataxia
- G12Spinal muscular atrophy and related syndromes
Diseases of the eye and adnexa
- H00Hordeolum and chalazion
- H00.0Hordeolum (externum) (internum) of eyelid
- H00.01Hordeolum externum
- H00.02Hordeolum internum
- H00.03Abscess of eyelid
- H00.1Chalazion
- H01Other inflammation of eyelid
- H01.0Blepharitis
- H01.00Unspecified blepharitis
- H01.01Ulcerative blepharitis
- H01.02Squamous blepharitis
- H01.1Noninfectious dermatoses of eyelid
Diseases of the ear and mastoid process
- H60Otitis externa
- H60.0Abscess of external ear
- H60.1Cellulitis of external ear
- H60.2Malignant otitis externa
- H60.3Other infective otitis externa
- H60.31Diffuse otitis externa
- H60.32Hemorrhagic otitis externa
- H60.33Swimmer's ear
- H60.39Other infective otitis externa
- H60.4Cholesteatoma of external ear
- H60.5Acute noninfective otitis externa
- H60.50Unspecified acute noninfective otitis externa
Diseases of the circulatory system
- I01Rheumatic fever with heart involvement
- I02Rheumatic chorea
- I05Rheumatic mitral valve diseases
- I06Rheumatic aortic valve diseases
- I07Rheumatic tricuspid valve diseases
- I08Multiple valve diseases
- I09Other rheumatic heart diseases
- I09.8Other specified rheumatic heart diseases
- I11Hypertensive heart disease
- I12Hypertensive chronic kidney disease
- I13Hypertensive heart and chronic kidney disease
- I13.1Hypertensive heart and chronic kidney disease w/o hrt fail
Diseases of the respiratory system
- J01Acute sinusitis
- J01.0Acute maxillary sinusitis
- J01.1Acute frontal sinusitis
- J01.2Acute ethmoidal sinusitis
- J01.3Acute sphenoidal sinusitis
- J01.4Acute pansinusitis
- J01.8Other acute sinusitis
- J01.9Acute sinusitis, unspecified
- J02Acute pharyngitis
- J03Acute tonsillitis
- J03.0Streptococcal tonsillitis
- J03.8Acute tonsillitis due to other specified organisms
Diseases of the digestive system
- K00Disorders of tooth development and eruption
- K01Embedded and impacted teeth
- K02Dental caries
- K02.5Dental caries on pit and fissure surface
- K02.6Dental caries on smooth surface
- K03Other diseases of hard tissues of teeth
- K03.8Other specified diseases of hard tissues of teeth
- K04Diseases of pulp and periapical tissues
- K04.0Pulpitis
- K04.9Other and unsp diseases of pulp and periapical tissues
- K05Gingivitis and periodontal diseases
- K05.0Acute gingivitis
Diseases of the skin and subcutaneous tissue
- L01Impetigo
- L01.0Impetigo
- L02Cutaneous abscess, furuncle and carbuncle
- L02.0Cutaneous abscess, furuncle and carbuncle of face
- L02.1Cutaneous abscess, furuncle and carbuncle of neck
- L02.2Cutaneous abscess, furuncle and carbuncle of trunk
- L02.21Cutaneous abscess of trunk
- L02.22Furuncle of trunk
- L02.23Carbuncle of trunk
- L02.3Cutaneous abscess, furuncle and carbuncle of buttock
- L02.4Cutaneous abscess, furuncle and carbuncle of limb
- L02.41Cutaneous abscess of limb
Diseases of the musculoskeletal system and connective tissue
- M00Pyogenic arthritis
- M00.0Staphylococcal arthritis and polyarthritis
- M00.01Staphylococcal arthritis, shoulder
- M00.02Staphylococcal arthritis, elbow
- M00.03Staphylococcal arthritis, wrist
- M00.04Staphylococcal arthritis, hand
- M00.05Staphylococcal arthritis, hip
- M00.06Staphylococcal arthritis, knee
- M00.07Staphylococcal arthritis, ankle and foot
- M00.1Pneumococcal arthritis and polyarthritis
- M00.11Pneumococcal arthritis, shoulder
- M00.12Pneumococcal arthritis, elbow
Diseases of the genitourinary system
- N00Acute nephritic syndrome
- N01Rapidly progressive nephritic syndrome
- N02Recurrent and persistent hematuria
- N02.BRecurrent and persistent immunoglobulin A nephropathy
- N03Chronic nephritic syndrome
- N04Nephrotic syndrome
- N04.2Nephrotic syndrome w diffuse membranous glomerulonephritis
- N05Unspecified nephritic syndrome
- N06Isolated proteinuria with specified morphological lesion
- N06.2Isolated proteinuria w diffuse membranous glomerulonephritis
- N07Hereditary nephropathy, not elsewhere classified
- N11Chronic tubulo-interstitial nephritis
Pregnancy, childbirth and the puerperium
- O00Ectopic pregnancy
- O00.0Abdominal pregnancy
- O00.1Tubal pregnancy
- O00.10Tubal pregnancy without intrauterine pregnancy
- O00.11Tubal pregnancy with intrauterine pregnancy
- O00.2Ovarian pregnancy
- O00.20Ovarian pregnancy without intrauterine pregnancy
- O00.21Ovarian pregnancy with intrauterine pregnancy
- O00.8Other ectopic pregnancy
- O00.9Ectopic pregnancy, unspecified
- O01Hydatidiform mole
- O02Other abnormal products of conception
Certain conditions originating in the perinatal period
- P00NB aff by matern cond that may be unrelated to present preg
- P00.8Newborn affected by other maternal conditions
- P01Newborn affected by maternal complications of pregnancy
- P02Newborn affected by comp of placenta, cord and membranes
- P02.2NB aff by oth and unsp morpholog and functn abnlt of plcnta
- P02.6Newborn affected by other and unsp cond of umbilical cord
- P02.7Newborn affected by chorioamnionitis
- P03Newborn affected by other comp of labor and delivery
- P03.8Newborn affected by oth complications of labor and delivery
- P03.81Newborn affected by abnlt in fetal heart rate or rhythm
- P04NB aff by noxious substnc transmitd via plcnta or brst milk
- P04.1Newborn affected by other maternal medication
Congenital malformations, deformations and chromosomal abnormalities
- Q00Anencephaly and similar malformations
- Q01Encephalocele
- Q03Congenital hydrocephalus
- Q04Other congenital malformations of brain
- Q05Spina bifida
- Q06Other congenital malformations of spinal cord
- Q07Other congenital malformations of nervous system
- Q07.0Arnold-Chiari syndrome
- Q10Congenital malform of eyelid, lacrimal apparatus and orbit
- Q11Anophthalmos, microphthalmos and macrophthalmos
- Q12Congenital lens malformations
- Q13Congenital malformations of anterior segment of eye
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- R00Abnormalities of heart beat
- R01Cardiac murmurs and other cardiac sounds
- R03Abnormal blood-pressure reading, without diagnosis
- R04Hemorrhage from respiratory passages
- R04.8Hemorrhage from other sites in respiratory passages
- R05Cough
- R06Abnormalities of breathing
- R06.0Dyspnea
- R06.8Other abnormalities of breathing
- R07Pain in throat and chest
- R07.8Other chest pain
- R09Oth symptoms and signs involving the circ and resp sys
Injury, poisoning and certain other consequences of external causes
- S00Superficial injury of head
- S00.0Superficial injury of scalp
- S00.00Unspecified superficial injury of scalp
- S00.01Abrasion of scalp
- S00.02Blister (nonthermal) of scalp
- S00.03Contusion of scalp
- S00.04External constriction of part of scalp
- S00.05Superficial foreign body of scalp
- S00.06Insect bite (nonvenomous) of scalp
- S00.07Other superficial bite of scalp
- S00.1Contusion of eyelid and periocular area
- S00.10Contusion of unspecified eyelid and periocular area
Codes for special purposes
External causes of morbidity
- V00Pedestrian conveyance accident
- V00.0Pedestrian on foot injured in collision w pedestrian convey
- V00.01Pedestrian on foot injured in collision with roller-skater
- V00.02Pedestrian on foot injured in collision with skateboarder
- V00.03Ped on foot injured in collision with stnd micr-mob conv
- V00.031Ped on foot injured in clsn with rider of stnd electr scoot
- V00.038Ped on foot injured in clsn with rider of stnd micr-mob conv
- V00.09Ped on foot injured in collision w oth pedestrian convey
- V00.1Rolling-type pedestrian conveyance accident
- V00.11In-line roller-skate accident
- V00.111Fall from in-line roller-skates
- V00.112In-line roller-skater colliding with stationary object
Factors influencing health status and contact with health services
- Z00Encntr for general exam w/o complaint, susp or reprtd dx
- Z00.0Encounter for general adult medical examination
- Z00.1Encounter for newborn, infant and child health examinations
- Z00.11Newborn health examination
- Z00.12Encounter for routine child health examination
- Z00.7Encntr for exam for delay growth in childhood
- Z01Encntr for oth sp exam w/o complaint, suspected or reprtd dx
- Z01.0Encounter for examination of eyes and vision
- Z01.02Enctr for exam of eyes and vision fol failed vision screen
- Z01.1Encounter for examination of ears and hearing
- Z01.11Encounter for exam of ears and hearing w abnormal findings
- Z01.2Encounter for dental examination and cleaning