Pediatricians will probably be remembering many International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes for years to come, well after they are no longer reported. And of these, probably none will be more memorable than the most common reason for visits, the V20 diagnosis codes associated with well-child visits. For International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM), the preventive medicine codes have been expanded to include 6 characters beginning with the letter Z (Table 1).

The ICD-10-CM tabular list instructs that codes for an abnor­mal finding at the well-newborn or well-child encounter are also reported. Additional diagnosis codes for abnormal findings may be reported when applicable, even when the problem does not require significant evaluation and management (E/M) in addition to the preventive medicine service provided.

Codes from category P07, disorders of newborn related to short gestation and low birth weight, not elsewhere classified,...

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