The total number of recalled inflators is now about 21 million in about 12.9 million Honda and Acuravehicles that have been subject to recall for replacing Takata front airbag inflators in the United States, the company said.
The Maryland incident is the first reported injury linked to a Takata air bag made with a chemical additive known as a desiccant that absorbs moisture to prevent the ammonium nitrate propellant from becoming unstable.
As of the moment, defective Takata airbag inflator fix count climbed to 7.2 million.
The recall includes some of Honda's most popular models, including Accord, CR-V, Civic, Element, Odyssey, Pilot and Ridgeline.
Takata airbag inflators have already resulted in millions of recalls worldwide. Also covered are Acura luxury models including the MDX from 2003 through 2006, the EL from 2001 through 2005, the TL from 2002 and 2003 and the CL from 2003.
NHTSA said not all vehicles that received replacement air bag inflators are affected.
Honda began alerting dealers of the recall's latest expansion and said owners will begin receiving notices in the mail by April 17.
Is my Honda auto being recalled because of risky air bags?
A NHTSA investigation into Takata air bag inflators remains open.
Honda Motor Co said on Tuesday it would recall 1.2 million Honda and Acura vehicles in North America to replace defective Takata airbags on the driver's side. Most models of Acura and Honda from 2001-2006 are on the recall list, released by Transport Canada. Consumer Report said that vehicles made by 19 different automakers have been recalled as part of the "largest and most complex safety recall in US history".
The inflator that failed was a replacement installed in 2015 under the terms of a prior recall.