ICD-10-CM Code Browser
Browse the complete ICD-10-CM code set by chapter. Select a chapter to view all categories and codes within that chapter.
ICD-10-CM Chapters
Chapter 1
Certain infectious and parasitic diseases
Covers bacterial, viral, and parasitic infections including tuberculosis, HIV, hepatitis, and other communicable diseases.
Chapter 2
Neoplasms
Includes all types of malignant and benign neoplasms, organized by anatomical site and behavior.
Chapter 3
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Covers disorders of blood cells, blood-forming organs, and immune mechanisms including anemias and coagulation defects.
Chapter 4
Endocrine, nutritional and metabolic diseases
Includes disorders of the endocrine glands, nutritional deficiencies, metabolic disorders, and diabetes mellitus.
Chapter 5
Mental, Behavioral and Neurodevelopmental disorders
Covers mental, behavioral, and neurodevelopmental disorders including dementia, substance use, schizophrenia, and mood disorders.
Chapter 6
Diseases of the nervous system
Includes diseases of the central and peripheral nervous system such as meningitis, Alzheimer's, Parkinson's, and epilepsy.
Chapter 7
Diseases of the eye and adnexa
Covers disorders of the eye and surrounding structures including glaucoma, cataracts, and visual disturbances.
Chapter 8
Diseases of the ear and mastoid process
Includes diseases of the ear and mastoid process such as otitis media, hearing loss, and vestibular disorders.
Chapter 9
Diseases of the circulatory system
Covers diseases of the heart and blood vessels including hypertension, ischemic heart disease, and cerebrovascular diseases.
Chapter 10
Diseases of the respiratory system
Includes diseases of the respiratory system such as influenza, pneumonia, COPD, asthma, and respiratory failure.
Chapter 11
Diseases of the digestive system
Covers diseases of the digestive system including disorders of the oral cavity, esophagus, stomach, intestines, liver, and pancreas.
Chapter 12
Diseases of the skin and subcutaneous tissue
Includes diseases of the skin and subcutaneous tissue such as infections, dermatitis, and other inflammatory conditions.
Chapter 13
Diseases of the musculoskeletal system and connective tissue
Covers diseases of the musculoskeletal system and connective tissue including arthropathies, dorsopathies, and osteoporosis.
Chapter 14
Diseases of the genitourinary system
Includes diseases of the genitourinary system such as kidney disease, urinary disorders, and disorders of male/female genital organs.
Chapter 15
Pregnancy, childbirth and the puerperium
Covers conditions related to pregnancy, childbirth, and the puerperium including complications of pregnancy and delivery.
Chapter 16
Certain conditions originating in the perinatal period
Includes conditions originating in the perinatal period such as birth trauma, respiratory conditions, and infections in newborns.
Chapter 17
Congenital malformations, deformations and chromosomal abnormalities
Covers congenital malformations, deformations, and chromosomal abnormalities present at birth.
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Includes symptoms, signs, and abnormal clinical findings not elsewhere classified, organized by body system.
Chapter 19
Injury, poisoning and certain other consequences of external causes
Covers injuries, poisoning, and certain other consequences of external causes including fractures, burns, and toxic effects.
Chapter 20
External causes of morbidity
Includes external causes of morbidity such as accidents, intentional self-harm, assault, and complications of medical care.
Chapter 21
Factors influencing health status and contact with health services
Covers factors influencing health status and contact with health services including examinations, screenings, and follow-up care.
Chapter 22
Codes for special purposes
Codes for special purposes (U00-U85)
About ICD-10-CM
The International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) is a system used by healthcare providers to classify and code diagnoses, symptoms, and procedures.
ICD-10-CM is organized into 21 chapters, with each chapter covering a specific body system or type of condition. Each chapter is identified by a range of codes (e.g., A00-B99 for infectious diseases). The codes consist of 3-7 characters, with the first character being a letter (A-Z) and the remaining characters being either numbers or letters.
This browser allows you to explore the complete ICD-10-CM code set, view detailed information about each code, and understand the relationships between codes. You can browse by chapter, category, or search for specific codes.