also 38 C.F.R. § 3.400(o )(2) (same). Thus, we have held that an “effective date should not be assigned mechanically based on the date of a diagnosis. Rather, all of the facts should be examined to determine the date that [the veteran’s disability] first manifested.” DeLisio v. Shinseki, 25 Vet.App. 45, 58 (2011); Hazan v. Gober, 10 Vet.App. 511, 521 (1997) (noting that for increased ratings claims, section 5110(b)(2) requires VA to “review all the evidence of record” (emphasis in original)). Therefore, the effective date for an increased rating, indeed, as well as for an initial rating or for staged ratings, is predicated on when the increase in the level of hearing loss can be ascertained. See 38 U.S.C. § 5110; 38 C.F.R. § 3.400 (2014); Fenderson v. West, 12 Vet.App. 119, 126 (1999) (<HOLDING>); see also Gaston v. Shinseki, 605 F.3d 979,
holding that congress envisioned two separate petitions filed to review two separate final orders recognizing division of separate property to be contrary to statute and constitution recognizing that separate ratings can be assigned for separate periods of time based on facts found recognizing as separate from pain and suffering holding a sentence enhancement for two prior convictions must be based on separate criminal episodes