Other disorders of the central nervous system (340-349) ICD-9-CM
The 340-349 section covered other disorders of the central nervous system with 130 legacy diagnosis codes across 10 code blocks. The info icons preview the first codes of each block, and every code page carries its ICD-10-CM crosswalk.
Retired Code Set
ICD-9-CM stopped being valid for U.S. claims with dates of service on or after October 1, 2015, when ICD-10-CM replaced it. Use this index for historical lookups and crosswalking; for current coding, start from the ICD-10-CM codes list or the ICD-9 / ICD-10 converter.
Code Blocks in This Section 10 blocks · 130 codes
The info icon previews what each row contains.
Questions About This Page
How many codes are in the 340-349 section?
The 340-349 section contains 130 legacy diagnosis codes across 10 code blocks in the final ICD-9-CM release.
Can I still use these codes on claims?
No. ICD-9-CM was retired on October 1, 2015. To code other disorders of the central nervous system today, use the current ICD-10-CM codes: every legacy code page in this range links its official replacement, and the ICD-9 / ICD-10 converter translates codes in both directions.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
