Contents
ICD-10-CM Structure –Format 3 – 7 Characters P09 S32.010A O9A.211 M1A.0111 •Codes longer than 3 characters always have decimal point after first 3 characters •1st character: alpha •2nd through 7th characters: alpha or numeric •7th character used in certain chapters (obstetrics, musculoskeletal, injuries, and external causes of injury) 9
FAQ in icd-10-cm, when are three-character codes used?
How many characters are in an ICD 10 code?
Basic code structure consists of three characters. A decimal point is used to separate the basic three-character category code from its subcategory and subclassifications. Most ICD-10-CM codes contain a maximum of six characters, with a few categories having a seventh-character code value.
What are the 3 characters in a medical diagnosis?
The next three characters (characters three through six) correspond to the related etiology (i.e., the cause, set of causes, or manner of causation of a disease or condition), anatomic site, severity, or other vital clinical details.
What is the second and third character in a code called?
The second and third characters may be either numbers or alpha characters. • Subcategories are either four or five characters. –Subcategory characters may be either letters or numbers. • Codes are three, four, five, or six characters and the final character in a code may be either a letter or number.
How many characters are in a category code?
Characters for categories, subcategories and codes may be either a letter or a number. All categories are 3 characters. A three-character category that has no further subdivision is equivalent to a code. Subcategories are either 4 or 5 characters.