CA AB2020

Expands the definition of "gravely disabled" under California's Lanterman-Petris-Short Act to include inability to make informed decisions about basic personal needs (food, clothing, shelter, medical care) without significant supervision, when such incapacity creates risk of substantial bodily harm, serious physical illness deterioration, psychiatric deterioration, or mismanagement of essential needs.

Allows counties to optionally adopt an additional definition of "gravely disabled" as a condition where a person lacks capacity to provide informed consent to treatment due to anosognosia (lack of awareness of one's mental illness).

Makes both new definitions available only if counties elect to use them and only to the extent funds are appropriated in the annual Budget Act.

Updates Health and Safety Code Section 1799.111 to reference the expanded definition of "gravely disabled" for hospital detention purposes.

Removes state-mandated local program designation and associated reimbursement requirements from the bill.