[Verified Answer]: In a case where the reason for…

In a case where the reason for reconsideration of the claim is that an incorrect ICD-10-CM (J45.909) was reported for uncomplicated asthma instead of the code for acute exacerbation of mild intermittence asthma (J45.21); code J45.21 meets medical necessity for CPT service code 9921 (level 5 office visit). In my appeal letter, Would I check, services medically necessary, or service claim underpaid or other?