But VA's home loan guaranty program falls under chapter 37. By expressly enumerating the chapters to which it applies, § 1151 does not redefine a service-connected death or disability for all benefits; it merely "provides an exception that grants compensation for some non-service-connected disabilities, treating those disabilities for some purposes ‘as if’ they were service-connected." Alleman v. Principi , 349 F.3d 1368, 1370–71 (Fed. Cir. 2003) (quoting § 1151(a) ). Note that § 1151(c) also provides for treating an "additional disability under this section ... as if it were a service-connected disability" for title 38, chapters 21 and 39. Again, this provision does not include chapter 37 benefits.