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ICD-9-CM procedure code (retired)

88.91 — Magnetic resonance imaging of brain and brain stem

ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-PCS equivalents from the CMS General Equivalence Mappings.

About ICD-9-CM 88.91

88.91 is an ICD-9-CM procedure code for magnetic resonance imaging of brain and brain stem. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-PCS took over.

The CMS General Equivalence Mappings translate it to 3 ICD-10-PCS codes, such as B030Y0Z (Magnetic Resonance Imaging (MRI) of Brain using Other Contrast, Unenhanced and Enhanced), B030YZZ (Magnetic Resonance Imaging (MRI) of Brain using Other Contrast) and B030ZZZ (Magnetic Resonance Imaging (MRI) of Brain). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 88.91

What is the ICD-10 code for ICD-9 88.91?

The GEMs map 88.91 to ICD-10-PCS B030Y0Z, B030YZZ and B030ZZZ.

GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.