Free online searchable
2009 ICD-9-CM
Diseases and Injuries
>> Tabular
Index
>> Alphabetic
Index
Procedures
>> Tabular
Index
>>
Alphabetic Index
Appendices
>> Drugs
/ Chemicals
>> External Causes
Other Resources
>> HCPCS Alpha
>> Medical
Dictionary
>> Drug Directory
Tips
Contribute
| Hydrogen Cyanide Hydrocyanic Acid | Acid, Hydrocyanic | Cyanide, Hydrogen Hydrogen cyanide (HCN); A toxic liquid or colorless gas. It is found in the smoke of various tobacco products and released by combustion of nitrogen-containing organic materials. |