Upcoming ICD-10 update includes new codes for Parkinson's and other conditions

The diagnosis codes on your claims sometimes play as big a role in determining whether you get paid as the service or procedure codes, so it’s important to prepare for the upcoming update to the ICD-10-CM. The update is effective for patient encounters on or after Oct. 1, 2023, and includes additions, deletions, and revisions to diagnosis codes common in family medicine.

For example, the current single code for Parkinson’s disease (G20) is expanding into these five codes:

• G20.A1 (Parkinson's disease without dyskinesia, without mention of fluctuations),
• G20.A2 (Parkinson’s disease without dyskinesia, with fluctuations),
• G20.B1 (Parkinson's disease with dyskinesia, without mention of fluctuations),
• G20.B2 (Parkinson’s disease with dyskinesia, with fluctuations),
• G20.C (Parkinsonism, unspecified).

ICD-10-CM is similarly expanding Z83.71 (“Family history of colonic polyps”) into four more specific codes:

• Z83.710 (Family history of adenomatous and serrated polyps),
• Z83.711 (Family history of hyperplastic colon polyps),
• Z83.718 (Other family history of colon polyps),
• Z83.719 (Family history of colon polyps, unspecified).

There will also be a new family of codes for chronic migraine with aura (G43.E-) and a new code for “Resistant hypertension” (I1A.0).

A complete set of the ICD-10-CM code changes that are effective Oct. 1 is available in the “Downloads” section of the 2024 ICD-10-CM webpage on the Centers for Medicare & Medicaid Services’ website.

— Kent Moore, AAFP Senior Manager for Payment Strategies

Posted on July 5, 2023