Is codeine classified as a Stimulant, Depressant, Hallucinogen or Narcotic?

Is codeine classified as a Stimulant, Depressant, Hallucinogen or Narcotic?.

Narcotic

The opioid drugs are classified as narcotics. These drugs are usually used as analgesics. Codeine in small dose also relieves cough.

Here are some examples of narcotics :

Is codeine classified as a Stimulant, Depressant, Hallucinogen or Narcotic?