The International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) coding guidelines advise the coder to select the appropriate code(s) 001.0–V86.1 to identify the diagnosis, symptoms, conditions, problems, complaints, or other reasons for the patient encounter and to list the code that is identified as the main reason for the procedure, service, or visit first in the medical record. Any coexisting conditions that affect the treatment or management of the patient at the time of service are also reported.

Codes 001–999 are used to report diseases, injuries, problems, or symptoms. Codes V01–V86 are used to report circumstances that cannot be classified with codes 001–999. Therefore, V codes may be reported as the primary diagnosis. In fact, some V codes may only be reported as a primary diagnosis; others may be reported as additional codes only (eg, secondary, tertiary), and still others as either primary or additional. V codes may be...

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