Examlex
The fourth ventricle in the brain is an expansion of the central canal of the spinal cord.
Conventions
A list of abbreviations, punctuation, symbols, typefaces, and instructional notes appearing in the beginning of the ICD-9. The items provide guidelines for using the code set.
WHO Terminology Guidelines
Standards and recommendations provided by the World Health Organization for the consistent use of medical and health-related terms.
Chief Complaint
is the primary issue or symptom that a patient reports to a healthcare provider during a visit.
Third-party Payers
Entities (other than the patient or healthcare provider) responsible for paying for healthcare services, typically insurance companies or government agencies.
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