The Social Security Disability Medical-Vocational Guidelines (Grids) are a set of rules that the Social Security Administration (SSA) uses to determine whether an individual is eligible for Social Security disability benefits based on their medical condition and work history.

The Grids consider all of the following factors when evaluating a disability claim: the individual's age, education, and work experience; the severity of the individual's medical condition; and the individual's ability to perform work-related activities.

There are three types of Grids: Medical Grids, Vocational Grids, and Residual Functional Capacity (RFC) Grids.

Medical Grids are a set of rules that use medical findings to determine if an individual is disabled. They consider the severity of the individual's medical condition and how it affects their ability to work.

Vocational Grids are a set of rules that use an individual's age, education, and work experience to determine if they are disabled. They consider the individual's ability to perform work-related activities and whether they can adjust to other jobs.

Residual Functional Capacity (RFC) Grids are a set of rules that use medical findings and vocational factors to determine if an individual is disabled. They consider the individual's ability to perform work-related activities and whether they can adjust to other jobs.

The SSA uses the Grids to evaluate a disability claim by comparing the individual's medical condition and work history to the Grids, determining the individual's RFC, and determining the individual's eligibility for disability benefits.

A Medical-Vocational Allowance (MVA) is a monthly payment made to individuals who are disabled but still able to work. A Social Security Disability Insurance (SSDI) benefit is a monthly payment made to individuals who are disabled and unable to work.

The eligibility requirements for an MVA are: the individual must be disabled but still able to work, the individual must be at least 18 years old, and the individual must have worked for at least 20 years.

The eligibility requirements for an SSDI benefit are: the individual must be disabled and unable to work, the individual must be at least 18 years old, and the individual must have worked for at least 10 years.

An individual can apply for an MVA or SSDI benefit by filing an application with the SSA, contacting the SSA by phone, or visiting the SSA website.

The average processing time for an MVA or SSDI application is 6-12 months.

The success rate for MVA and SSDI applications is 60%.

Common reasons why MVA and SSDI applications are denied include: the individual does not meet the eligibility requirements, the individual's medical condition is not severe enough, and the individual's work history is not sufficient.

If an individual's MVA or SSDI application is denied, they can file an appeal with the SSA, contact the SSA by phone, or visit the SSA website.