Insurers have so far counted US$170m in preliminary claims, but the country may need up to US$5bn, or around 10% of GDP, to rebuild after the disaster.
Hydropower projects account for nearly 80% of reported losses, with widespread damage to energy infrastructure expected to drive the bulk of insurance claims.
International reinsurers will take a significant share of what is covered, with hydropower plants, engineering projects and commercial property along the China trade corridor driving most claims.
At least 177 have died and 826 are unaccounted for, with insurers estimating early claims for hydropower and construction projects at least in the hundreds of millions of rupees.
BNPB data to midnight on Sunday also records 101 people injured, more than 5,000 displaced, and damage to 93 education facilities, 36 health facilities and 38 government offices.
Ahead of landfall, the insurer sent 48.99 million warnings through its Eagle Eye platform, inspected 2,458 flood-prone sites and helped move more than 2,770 vehicles out of harm's way.
