ICD-10 Pediatrics PE Exams

Please clarify-if a child who is known to have past abnormal findings (acne, asthma, etc) is coming in for a PE-do I code Z00.121 because she will also have those same findings, or do I only use Z00.121 for NEW abnormal findings even though she still has acne and asthma? Is there a good resource to better understand this?

ICD-10 Pediatrics PE Exams