N.Y. Comp. Codes R. & Regs. tit. 9, § 6217.9 – Voter registration status.

(a) Each voter maintained in NYSVoter will be assigned a voter registration status by the county board which will determine the voter's eligibility to vote. The voter registration status will be updated after an application is processed and an application disposition has been assigned. The discreet voter registration statuses and their definitions to be stored by NYSVoter are described below.
1. (1) Active. The voter is properly registered and is eligible to vote in elections. There are several categories of active voters, as specified below:
  1. (i) active;
  2. (ii) active miliary;
  3. (iii) active UOCAVA;
  4. (iv) active special presidential; and
  5. (v) active special Federal.
2. (2) Inactive. The voter is still eligible to vote in elections, but is not included in the poll book. NYSVoter shall allow a county election official to designate a voter as inactive, noting the reason for the designation, such as "election material mailed to registrant returned as undeliverable" or "moved with an out of county forwarding address", "affidavit ballots".
3. (3) Purged. The voter is no longer eligible to vote in an election, and will not appear in the list of registered voters. This list is to be utilized to prevent deceased voters from overwhelming valid voters when doing voter searches and to allow for voters who later re-register to vote to resurrect and utilize their unique identifier.
4. (4) Pre-registered. The voter has met all the requirements to be an active voter but has not yet attained the age of 18. Pre-registered voters that will be 18 years old on or before the election date are included in the poll book and are eligible to vote in the election. The voter must be at least 16 years old to pre-register.
5. (5) NYSVoter store reason codes for inactive and purged voters indicating or explaining the reason for a specific voter's status, as follows:
  1. (i) inactive status - mail check, NCOA, returned mail;
  2. (ii) purged status - death, voter request, felon, ADF (adjudicated) incompetent, NVRA, moved out of country.