Compare the FO-provided Diagnosis Code to the current primary or secondary diagnosis
codes in blocks 16A and 16B on the current SSA-831.
If the first three digits of the Diagnosis Code are the same as the first three digits
of the primary or secondary diagnosis codes shown in blocks 16A or 16B on the current
SSA-831, determine the current impairment to be the same as, or directly related to
the impairment upon which we based the previous entitlement.
NOTE: If the current impairment is HIV and you see the impairment codes 042, 043, 044,
or 279, you can determine that the impairment is the same as or directly related to
the impairment upon which we based the previous entitlement (over the years we used
various impairment codes for HIV cases).