ICD Codes with
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International Classification of Diseases 11th Revision

ICD-11, the eleventh version of the International Classification of Diseases (ICD), is set to replace the ICD-10 as the global standard for recording health information and causes of death on 1st October 2023. The ICD-11 is a large taxonomy consisting of about 85,000 entitles. It is part of the WHO-FIC, a family of medical classifications. But, till then ICD-10 will continue to function and remain as primary source for coding medical diagnosis and treatments to file healthcare claims. Continue further to know what ICD-10 codes are, how do they work and more.

What is ICD-10 Codes?

ICD-10 is the 10th revision of ICD (International Statistical Classification of Diseases and Related Health problems), a medical classification list by the WHO (World Health Organization). It helps healthcare providers and revenue cycle management (RCM) specialists identify and code health conditions, signs and symptoms and treatment rendered to the patients. ICD-10 codes have successfully replaced all ICD-9 code sets; it allows for tracking of many more diagnoses. Providers need to use them under HIPAA (Health Insurance Portability & Accountability Act) to keep medical information private and secure. ICD-10-CM has over 70,000 codes, making it more comprehensive than ICD-9. 


Understanding ICD-10-CM Codes

ICD-10-CM codes are 3-7 characters in length. The first character is always a letter, and the rest can be letters or numbers. Each character adds its own element of meaning, such as category, etiology, anatomic site, severity, or other clinical detail.

List of ICD-10 Codes

Chapter Code Range Details
1 A00-B99 Certain infectious and parasitic diseases
2 C00-D49 Neoplasms
3 D50-D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
4 E00-E89 Endocrine, nutritional, and metabolic diseases
5 F01-F99 Mental, Behavioral and Neurodevelopmental disorders
6 G00-G99 Diseases of the nervous system
7 H00-H59 Diseases of the eye and adnexa
8 H60-H95 Diseases of the ear and mastoid process
9 I00-I99 Diseases of the circulatory system
10 J00-J99 Diseases of the respiratory system
11 K00-K95 Diseases of the digestive system
12 L00-L99 Diseases of the skin and subcutaneous tissue
13 M00-M99 Diseases of the musculoskeletal system and connective tissue
14 N00-N99 Diseases of the genitourinary system
15 O00-O9A Pregnancy, childbirth, and the puerperium
16 P00-P96 Certain conditions originating in the perinatal period
17 Q00-Q99 Congenital malformations, deformations, and chromosomal abnormalities
18 R00-R99 Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified
19 S00-T88 Injury, poisoning and certain other consequences of external causes
20 V00-Y99 External causes of morbidity
21 Z00-Z99 Factors influencing health status and contact with health services

Medical Coding Made Easy with HealthX 2.0

We have built an AI-based revenue cycle management (RCM) solution, HealthX, that encapsulates the latest payer guidelines and ICD-10 codes to help healthcare providers maintain a clean claims rate of over 98%, improve prior auth, eligibility & verification and accelerate reimbursements faster.