What Does 850.9 Concussion Unspecified In A Medical Report Indicate?
It is the diagnosis code according to the ICD-9 classification.
Detailed Answer:
I read your question carefully and I understand your confusion in front of that numbering.
It refers to the ICD code. ICD is an acronym for International Classification of Diseases. It is a classification system created by the World Health Organization where each diagnosis has a number. It makes statistical analysis, epidemiological studies, billing papers etc easier to manage than using the full wording of the diagnosis.
It is revised time after time. That code is according to the 9th version ICD-9, which will be gradually replaced by ICD-10.
Anyway to you as a patient shouldn't matter much, as I said it is used for statistical and billing purposes.
So the 850.9 code refers to Concussion of any type (hence the term unspecified).
If you care to read further subdivisions you can check this link http://www.icd9data.com/2015/Volume1/800-999/850-854/850/850.9.htm
Let me know if I can further assist you.