AUGUSTA — The Maine House has approved a bill to extend MaineCare coverage for certain drug addiction treatments to more than two years.

The House gave final approval to the bill on Wednesday.

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It allows for the continuation of MaineCare coverage for methadone and Suboxone if a person is pregnant, has serious and persistent mental illness or lives with a young child.

Suboxone and methadone treat addictions to heroin and similar drugs. Maine currently has a two-year cap on coverage for such treatment.

Supporters say that putting a limit on the treatment puts patients at risk for relapse. The measure faces a final vote in the Senate.

Lawmakers are pushing through a slew of legislation as they plan to the end the 2013 session on Wednesday.