
    UNITED STATES of America, Plaintiff-Appellee, v. Ronald Todd PAPA, Defendant-Appellant.
    No. 02-6313.
    United States Court of Appeals, Tenth Circuit.
    May 13, 2004.
    Michael James, Asst. U.S. Attorney, Oklahoma City, OK, Barbara E. Ryan, U.S. Attorney’s Office, Oklahoma City, OK, for Plaintiff-Appellee.
    R. Scott Adams, Adams & Associates, Oklahoma City, OK, for Defendant-Appellant.
    Before HARTZ, BALDOCK, and McCONNELL, Circuit Judges.
   ORDER AND JUDGMENT

McCONNELL, Circuit Judge.

After examining appellant’s brief and the appellate record, this panel has determined unanimously to grant appellant’s request for a decision on the briefs without oral argument. See Fed. R.App. P. 34(f); 10th Cir. R. 34.1(G). The case is therefore ordered submitted without oral argument.

Defendant-appellant Ronald Todd Papa appeals the district court’s decision denying him collateral relief from the sentence he received for conspiring to defraud the United States. This court, on its own motion, ordered this appeal abated pending our en banc decision in United States v. Hahn, 359 F.3d 1315 (10th Cir.2004) (per curiam). Having decided Hahn, we now vacate our order abating this appeal.

Papa and his co-defendant were officers and directors of a medical supply company, Destín Health Care, Inc. The Health Care Financing Administration (HCFA) initiated an administrative proceeding to look into possible improprieties with Destin’s Medicare claims for 1993 and the first part of 1994. As part of those proceedings, the HCFA held an administrative hearing in August 1999 to address a Medicare carrier’s allegations that Destín had filed four million dollars in fraudulent Medicare claims during that time period. See Aplt’s App. at 18. At that hearing, Destín challenged the method the carrier had used to calculate that loss. See id. at 19-20.

A month after the administrative hearing, but while the HCFA’s decision was still pending, the United States indicted Papa and his co-defendant on one count of conspiring to defraud the United States, see 18 U.S.C. § 371, and one count of filing false or fraudulent claims with the United States, see 18 U.S.C. § 287. In October 1999, Papa, as well as his co-defendant, agreed to plead guilty to the conspiracy count, in exchange for the government’s moving to dismiss the false-claims count. In his plea agreement, Papa apparently agreed, and never objected, to the government’s calculation that Papa’s criminal conduct resulted in the United States losing over eight million dollars. See Aplt’s App. at 30, 31 (Dist.Ct.Order). Based upon that eight-million-dollar loss calculation, the district court sentenced Papa to thirty months’ imprisonment, followed by three years’ supervised release, and ordered Papa to pay over ten million dollars in restitution, representing the United States’ eight-million-dollar loss plus interest.

Several months after his sentencing, the HCFA issued its decision, based upon the earlier administrative hearing. The HCFA concluded that the Medicare carrier had failed to support all of its claims adequately, and reduced the alleged four-million-dollar loss to just over $16,000 for 1993 and just over $4,000 for the first part of 1994. See id. at 18-23 (HCFA decision). Based on that administrative decision, Papa then filed a 28 U.S.C. § 2255 motion challenging the length of his sentence and the ten-million-dollar restitution award.

As an initial matter, we note that, as part of his plea agreement, Papa waived his right to appeal or to pursue any collateral relief. See Aplt’s App. at 6 (Papa’s amended mem. supporting § 2255 motion). That waiver, nevertheless, does not deprive this court of jurisdiction to consider this appeal. See Hahn, 359 F.3d at 1320, 1324 (considering direct criminal appeal). Moreover, the government did not argue that Papa’s plea-agreement waiver precludes these collateral proceedings. See Aplt’s App. at 32. Because ultimately Papa’s claims lack merit, we will assume the government has waived this argument.

Turning to the merits of Papa’s claims, he first challenges the length of his imprisonment and supervised release, as based upon the government’s eight-million-dollar loss calculation. The district court, however, held that Papa had proeedurally defaulted this claim by not objecting to the loss calculation until his § 2255 motion. We agree.

Papa argues that he has cause excusing this default, because his current claim rests on newly discovered evidence — the HCFA’s administrative decision issued after his sentencing. But, while the HCFA did not issue its decision until after the district court had sentenced Papa, the administrative hearing underlying that decision occurred prior to the government even indicting, let alone sentencing, Papa. And during that administrative hearing, Destín was able to challenge the Medicare carrier’s method for calculating the government’s loss. Before his criminal proceedings, therefore, Papa was aware, or should have been aware, of the grounds Destín had already used to challenge the government’s loss calculation at the administrative hearing. Yet, in his criminal case, Papa never objected and, in fact, agreed to the government’s eight-million-dollar loss calculation. See Aplt’s App. at 30, 31. Papa, therefore, has failed to establish cause excusing his procedural default. See, e.g., Strickler v. Greene, 527 U.S. 263, 287, 119 S.Ct. 1936, 144 L.Ed.2d 286 (1999) (noting defendant will be unable to establish cause where he was previously aware of factual basis for claim, but failed to raise it earlier).

Further, although a § 2255 motion may be the appropriate method for challenging a federal conviction for the first time, where “[t]he facts relied on are dehors the record and their effect on the judgment was not open to consideration and review on appeal,” Waley v. Johnston, 316 U.S. 101, 104, 62 S.Ct. 964, 86 L.Ed. 1302 (1942); see also Bousley v. United States, 523 U.S. 614, 621-22, 118 S.Ct. 1604, 140 L.Ed.2d 828 (1998), again Papa has failed to establish that the means to challenge the government’s loss calculation were unavailable to him at the time the district court sentenced him.

We would further note that it is not at all clear from the appellate record that Papa’s criminal case and the HCFA administrative proceedings addressed the same time frame and the same claims. For one thing, the administrative hearing addressed four million dollars’ worth of allegedly fraudulent claims, while the government’s presentencing report, in these criminal proceedings, alleged twice that much. Additionally, the district court noted that, while the HCFA proceedings addressed “only ... whether the services [Destín provided] were medically necessary and whether the services were documented,” the criminal indictment instead charged more broadly that Destin’s false Medicare claims involved claims for supplies that 1) it never provided; 2) were not reimbursable; 3) were not medically necessary; 4) did not have a Florida “point of sale;” and 5) involved the “non-collection of co-payments.” Aplt’s App. at 30, 35 (Dist. Ct. Order at 2, 7). Based upon these differences in the scope of the administrative and criminal proceedings, therefore, the district court concluded that “the HCFA’s Hearing Officer’s decision would have had only a small impact on the government’s proof of loss.” Id. at 35 (Dist. Ct. Order at 7). Papa has not specifically challenged these distinctions drawn by the district court.

Papa next challenges the amount of restitution the district court ordered. He cannot challenge that award under § 2255, however, because he is not “claiming the right to be released” from custody based on that claim. 28 U.S.C. § 2255. See, e.g., United States v. Bernard, 351 F.3d 360, 361 (8th Cir.2003), citing cases, cert. denied, — U.S.-, 124 S.Ct. 2044, 158 L.Ed.2d 512 (2004). And, even if Papa could, instead, seek coram-nobis relief from the restitution order, see Barnickel v. United States, 113 F.3d 704, 706 (7th Cir.1997), that relief is not warranted here. Coram-nobis relief is available only to correct errors that result in a complete miscarriage of justice. See, e.g., United States v. Haga, 931 F.2d 642, 645 (10th Cir.1991) (quotation omitted). In order to obtain coram-nobis relief based upon newly discovered evidence, Papa must still show, among other things, “that due diligence on his part could not have revealed the evidence prior to” sentencing. Klein v. United States, 880 F.2d 250, 253-54 (10th Cir.1989). Papa has failed to make that showing.

For these reasons, this court’s order abating this appeal is VACATED and the judgment of the district court is AFFIRMED. 
      
       This order and judgment is not binding precedent, except under the doctrines of law of the case, res judicata, and collateral estoppel. The court generally disfavors the citation of orders and judgments; nevertheless, an order and judgment may be cited under the terms and conditions of 10th Cir. R. 36.3.
     
      
      . This court previously granted Papa a certificate of appealability on his 28 U.S.C. § 2255 claims challenging both the length of his sentence and the amount of restitution ordered. See 28 U.S.C. § 2253. To the extent Papa is appealing the district court’s decision denying him coram-nobis relief, he does not need a COA. See United States v. Torres, 282 F.3d 1241, 1245 n. 6, 1247 n. 9 (10th Cir.2002).
     
      
      . Although this court can still generally overlook a procedural default if declining to review a claim would produce a fundamental miscarriage of justice, this procedural-bar exception does not apply to claims like Papa’s, challenging a non-capital sentence. See United States v. Richards, 5 F.3d 1369, 1371 (10th Cir.1993).
     