304 Drug dependence (304.00-304.93) ICD-9-CM
The 304.00-304.93 block classified 304 drug dependence with 40 legacy diagnosis codes. None remain valid for claim submission; each code below links to its reference page with the official ICD-10-CM replacement under the CMS General Equivalence Mappings.
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.
Legacy Codes in the 304.00-304.93 Block 40 codes
None of these codes remain valid for claim submission. Each code page shows its ICD-10-CM replacement under the CMS General Equivalence Mappings.
- 304.00 Opioid dependence-unspec
- 304.01 Opioid dependence-contin
- 304.02 Opioid dependence-episod
- 304.03 Opioid dependence-remiss
- 304.10 Sed,hyp,anxiolyt dep-NOS
- 304.11 Sed,hyp,anxiolyt dep-con
- 304.12 Sed,hyp,anxiolyt dep-epi
- 304.13 Sed,hyp,anxiolyt dep-rem
- 304.20 Cocaine depend-unspec
- 304.21 Cocaine depend-contin
- 304.22 Cocaine depend-episodic
- 304.23 Cocaine depend-remiss
- 304.30 Cannabis depend-unspec
- 304.31 Cannabis depend-contin
- 304.32 Cannabis depend-episodic
- 304.33 Cannabis depend-remiss
- 304.40 Amphetamin depend-unspec
- 304.41 Amphetamin depend-contin
- 304.42 Amphetamin depend-episod
- 304.43 Amphetamin depend-remiss
- 304.50 Hallucinogen dep-unspec
- 304.51 Hallucinogen dep-contin
- 304.52 Hallucinogen dep-episod
- 304.53 Hallucinogen dep-remiss
- 304.60 Drug depend NEC-unspec
- 304.61 Drug depend NEC-contin
- 304.62 Drug depend NEC-episodic
- 304.63 Drug depend NEC-in rem
- 304.70 Opioid/other dep-unspec
- 304.71 Opioid/other dep-contin
- 304.72 Opioid/other dep-episod
- 304.73 Opioid/other dep-remiss
- 304.80 Comb drug dep NEC-unspec
- 304.81 Comb drug dep NEC-contin
- 304.82 Comb drug dep NEC-episod
- 304.83 Comb drug dep NEC-remiss
- 304.90 Drug depend NOS-unspec
- 304.91 Drug depend NOS-contin
- 304.92 Drug depend NOS-episodic
- 304.93 Drug depend NOS-remiss
Questions About This Page
Are the 304.00-304.93 codes still billable?
No. Every code in this block became invalid for U.S. claims after September 30, 2015. Each code page linked above shows the ICD-10-CM replacement CMS assigned in the General Equivalence Mappings, and the ICD-9 / ICD-10 converter translates any of them directly.
What did the 304.00-304.93 block classify?
The block classified 304 drug dependence with 40 codes in the final ICD-9-CM release. It sat under Mental disorders (290–319) in the legacy hierarchy.
Related References
Source: final CMS ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.
