Bhubaneswar: The Odisha Public Service Commission (OPSC) has issued a subject code notification for candidates appearing in the Odisha Civil Services (OCS) Main Written Examination-2025, scheduled to be held from October 29 to November 7, 2026.

The notification, issued on October 13 under Advertisement No. 05 of 2025-26, contains 75 subject codes covering compulsory papers, optional subjects and Indian language literature papers. Candidates have been advised to enter the appropriate code in their Question-cum-Answer Booklets while appearing for the examination.

OPSC OCS Mains 2026: Important Dates

The written examination will begin on October 29 with the Odia Language and English Language papers. The Essay paper is scheduled for October 30, followed by General Studies Papers I and II on November 2. General Studies Papers III and IV will be conducted on November 4, while the two optional subject papers are scheduled for November 7.

Subject Codes For Compulsory Papers

The commission has assigned separate codes to each compulsory paper. Odia Language carries code 01, English Language 02, and Essay 03. General Studies Papers I, II, III and IV have been assigned codes 04, 05, 06 and 07, respectively.

The optional subject list covers disciplines such as History, Geography, Law, Political Science and International Relations, Sociology, Economics, Anthropology, Mathematics and Public Administration, among others. Each optional subject has separate codes for Paper I and Paper II.

Candidates choosing language literature papers should take note of the distinction between compulsory language papers and literature subjects. For instance, the compulsory Odia Language paper carries code 01, while Odia literature papers are assigned codes 72 and 73. Similarly, compulsory English is coded 02, whereas English literature papers carry codes 68 and 69.

How To Check The Notification

Candidates can visit the official OPSC website at opsc.gov.in to access the notification and verify their respective subject codes. They should ensure that the code entered in the answer booklet matches the paper being attempted.

The latest notice concerns subject codes; candidates should refer to the commission's detailed examination programme for the complete timetable and session timings.