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
| Animal Migration Migration, Animal | Animal Migrations | Migrations, Animal Periodic movements of animals in response to seasonal changes or reproductive instinct. Hormonal changes are the trigger in at least some animals. Most migrations are made for reasons of climatic change, feeding, or breeding. | |
| The National Library of Medicine (terms and conditions) | |