G13.1

ICD-10-CM Coding Rules

• G13.1

Applicable To

• Paraneoplastic limbic encephalopathy

Clinical Information

• A paraneoplastic syndrome marked by degeneration of neurons in the limbic system. Clinical features include hallucinations, loss of episodic memory; anosmia; ageusia; temporal lobe epilepsy; dementia; and affective disturbance depression). Circulating anti-neuronal antibodies e.g., anti-hu; anti-yo; anti-ri; and anti-ma2) and small cell lung carcinomas or testicular carcinoma are frequently associated with this syndrome.

• A rare disorder characterized by degenerative changes in the limbic area of the brain. Causes include infections and autoimmune conditions; it may also manifest as a paraneoplastic syndrome, most often caused by small cell lung carcinoma. Signs and symptoms include behavioral changes, hallucinations and dementia.

Details

• G13.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• Short description: Oth systemic atrophy aff cnsl in neoplastic disease

• The 2023 edition of ICD-10-CM G13.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of G13.1 – other international versions of ICD-10 G13.1 may differ.