it looks like you need to add the administration
per EncoderPro (emphasis added by me):
These codes report the physician's
preparation of an antigen for allergen immunotherapy and the provision of the antigen extract itself. These codes also
include the providing physician's calculations for the concentration and volume to be used in the dosage based upon the patient's previous skin test results and personal history. These
codes do not, however, include the administration of the allergen therapy. The number of doses must be specified and the vial(s) (series of vials from a treatment board or one multiple dose vial) from which the dose may be drawn is irrelevant. Report the code based on the type of preparation, i.e., the number of different venoms contained in a single administered injection of the extract. Report
95145 for a dose containing one single stinging insect venom,
95146 for an extract containing two single stinging insect venoms,
95147 for three,
95148 for four, and
95149 for five single stinging insect venoms in one dose extract. Code
95165 reports single or multiple antigens (not stinging insect), and
95170 is for a whole body extract of a biting insect or other arthropod.
________________________
per
CMS Billing and Coding Article: Allergy Immunotherapy:
To bill for 95165, the number of doses must be designated.
If a physician prepares the allergen and administers the injection on the same DOS,
bill the appropriate injection code (CPT codes 95115 or 95117) AND the appropriate preparation (single dose) code (CPT codes 95145-95170). For billing, need to specify the number of doses in the days/units field
________________________________________________
and here is a cool article:
CPT 95165 Coding Conundrums