Document and Entity Information (USD $)	12 Months Ended
Sep. 30, 2012	Feb. 19, 2013	Mar. 31, 2012
Document And Entity Information
Entity Registrant Name	Bio-Matrix Scientific Group, Inc.
Entity Central Index Key	0001079282
Document Type	10-K
Document Period End Date	Sep. 30, 2012
Amendment Flag	true
Current Fiscal Year End Date	--09-30
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 564,979
Entity Common Stock, Shares Outstanding		1,998,299,049
Amendment Description	EXPLANATORY NOTE: THIS AMENDMENT NO.4 TO BIO-MATRIX SCIENTIFIC GROUP, INC’S (THE “COMPANY”) FORM 10-K FOR THE PERIOD ENDED SEPTEMBER 30, 2012 (“FORM 10-K”) IS BEING FILED SOLELY TO AMEND THE FOLLOWING PORTIONS OF AMENDMENT NO 3 TO THE FORM 10K.(“ORIGINAL FILING”) PART 1 ITEM 8 Audit Report for the year ended September 30, 2011 Consolidated Statement of Cash Flow THE COMPANY HAS NOT MODIFIED OR UPDATED DISCLOSURES PRESENTED IN THE ORIGINAL FILING, EXCEPT AS INDICATED ABOVE. ACCORDINGLY, THIS AMENDMENT DOES NOT REFLECT EVENTS OCCURRING AFTER THE DATE OF THE ORIGINAL FILING AND DOES NOT MODIFY OR UPDATE THOSE DISCLOSURES AFFECTED BY SUBSEQUENT EVENTS, EXCEPT AS SPECIFICALLY REFERENCED HEREIN. INFORMATION NOT AFFECTED BY THE ABOVE AMENDMENTS IS UNCHANGED AND REFLECTS THE DISCLOSURES MADE AT THE TIME OF THE ORIGINAL FILING.
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2012

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