The announcement on Monday is just the latest in the long-running lawsuit aimed at improving inmate medical care.
The judges say they will appoint a compliance officer who will release inmates early if the state does not meet the final goal. California is still more than 5,000 inmates over the limit set by the courts.
Gov. Jerry Brown's administration says it is expanding a Stockton medical facility, paroling elderly and incapacitated inmates, and increasing good-time credits for some nonviolent offenders in order to reach the limit set by the courts by the end of February 2016.
The Associated Press contributed to this report.