Frontal lobe syndrome

This code represents a collection of cognitive, behavioral, and emotional deficits resulting from damage to the frontal lobes of the brain. Patients may exhibit executive dysfunction, personality changes, disinhibition, apathy, or impaired judgment. It reflects a broad neurological syndrome rather than a specific etiology.

Assign this code when documentation explicitly states "frontal lobe syndrome" or describes a constellation of symptoms clearly attributable to frontal lobe dysfunction, such as impaired planning, social inappropriateness, or emotional lability, following a brain injury, tumor, or degenerative process. Supporting documentation should include neurological examination findings and imaging reports confirming frontal lobe involvement.

• Do not use this code for isolated symptoms that could be part of other neurological or psychiatric conditions without clear evidence of frontal lobe involvement.
• Always sequence this code after the primary diagnosis indicating the underlying cause of the frontal lobe damage (e.g., traumatic brain injury, stroke, tumor).
• Ensure the medical record clearly distinguishes frontal lobe syndrome from general cognitive decline or other dementia types.