According to FAR 61.56...
(c) Except as provided in paragraphs (d), (e) and (g)
of this section, no person may act as pilot in com-
mand of an aircraft unless, since the beginning of
the 24th calendar month before the month in
which that pilot acts as pilot in command, that
person has—
(1) Accomplished a flight review given in an air-
craft for which that pilot is rated by an autho-
rized instructor; and
(2) A logbook endorsed from an authorized
instructor who gave the review certifying that
the person has satisfactorily completed the
review.
(d) A person who has, within the period specified in
paragraph (c) of this section, passed a pilot profi-
ciency check conducted by an examiner, an
approved pilot check airman, or a U.S. Armed
Force, for a pilot certificate, rating, or operating
privilege, need not accomplish the flight review
required by this section.
(e) A person who has, within the period specified in
paragraph (c) of this section, satisfactorily accom-
plished one or more phases of an FAA-sponsored
pilot proficiency award program need not accom-
plish the flight review required by this section.
And, interpreted by AOPA/ASF's Pilot's Guide to the Flight Review,
2. What can take the place of a flight review?
The following serve as exemptions:
• FAR Section 61.58 pilot proficiency check
• FAR Part 121 pilot proficiency check
• FAR Part 135 pilot proficiency check
• FAR Part 141 chief pilot proficiency check
• Military pilot proficiency check
• Other proficiency checks administered by
the FAA
• Pilot examiner annual flight check
• Flight test for any certificate or rating
• Operations specifically authorized by
the FAA
• Satisfactory completion of any phase of the
FAA “Wings” program
HOWEVER... that same document states the following unequivocally ...
Does an instrument proficiency check serve as
a flight review?
No. The instructor may combine the two functions
during the same flight, however. In that case, the
pilot’s logbook must be endorsed for an instrument
proficiency check and a flight review.
As usual, it doesn't seem clear upon the first couple reads as to whether or not an instrument profiency check would be accepted. Subsection d above, which reads, "A person who has..passed a pilot proficiency check conducted by an examiner, an approved pilot check airman, or a U.S. Armed Force, for a pilot certificate, rating, or operating privilege, need not accomplish the flight review required by this section," would seem to indicate that it COULD be used in place of a BFR. Is not an Instrument Proficiency Check ... "conducted by an examiner...for a pilot... operating privilege," i.e., for the privilege of IFR flight operations? And.. is it not one of the bullet points in the AOPA document, "Other proficiency check(s) administered by the FAA?"
If you had mentioned the need in the near future of a BFR to your IPC examiner, he/she probably could have just given both endorsements in your logbook at that time. Maybe ask that person for assistance?