ICD-9-CM procedure code (retired)
01.18 — Other diagnostic procedures on brain and cerebral meninges
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 01.18
01.18 is an ICD-9-CM procedure code for other diagnostic procedures on brain and cerebral meninges. 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 26 ICD-10-PCS codes, such as 00J04ZZ (Inspection of Brain, Percutaneous Endoscopic Approach), 00K00ZZ (Map Brain, Open Approach) and 00K03ZZ (Map Brain, Percutaneous Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 00J04ZZInspection of Brain, Percutaneous Endoscopic Approachapproximate
- 00K00ZZMap Brain, Open Approachapproximate
- 00K03ZZMap Brain, Percutaneous Approachapproximate
- 00K04ZZMap Brain, Percutaneous Endoscopic Approachapproximate
- 00K70ZZMap Cerebral Hemisphere, Open Approachapproximate
- 00K73ZZMap Cerebral Hemisphere, Percutaneous Approachapproximate
- 00K74ZZMap Cerebral Hemisphere, Percutaneous Endoscopic Approachapproximate
- 00K80ZZMap Basal Ganglia, Open Approachapproximate
- 00K83ZZMap Basal Ganglia, Percutaneous Approachapproximate
- 00K84ZZMap Basal Ganglia, Percutaneous Endoscopic Approachapproximate
- 00K90ZZMap Thalamus, Open Approachapproximate
- 00K93ZZMap Thalamus, Percutaneous Approachapproximate
- 00K94ZZMap Thalamus, Percutaneous Endoscopic Approachapproximate
- 00KA0ZZMap Hypothalamus, Open Approachapproximate
- 00KA3ZZMap Hypothalamus, Percutaneous Approachapproximate
- 00KA4ZZMap Hypothalamus, Percutaneous Endoscopic Approachapproximate
- 00KB0ZZMap Pons, Open Approachapproximate
- 00KB3ZZMap Pons, Percutaneous Approachapproximate
- 00KB4ZZMap Pons, Percutaneous Endoscopic Approachapproximate
- 00KC0ZZMap Cerebellum, Open Approachapproximate
- 00KC3ZZMap Cerebellum, Percutaneous Approachapproximate
- 00KC4ZZMap Cerebellum, Percutaneous Endoscopic Approachapproximate
- 00KD0ZZMap Medulla Oblongata, Open Approachapproximate
- 00KD3ZZMap Medulla Oblongata, Percutaneous Approachapproximate
- 00KD4ZZMap Medulla Oblongata, Percutaneous Endoscopic Approachapproximate
- 0WJ14ZZInspection of Cranial Cavity, Percutaneous Endoscopic Approachapproximate
Common questions about 01.18
What is the ICD-10 code for ICD-9 01.18?
- The GEMs map 01.18 to ICD-10-PCS 00J04ZZ, 00K00ZZ, 00K03ZZ, 00K04ZZ, 00K70ZZ, 00K73ZZ and 20 more.
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.