Vacated and remanded for resentencing by published opinion. Judge WILKINS wrote the opinion, in which Judge RUSSELL and Judge HERLONG joined.
OPINION
Donald Reece Brock appeals the sentence imposed by the district court following his plea of guilty tо two counts of credit card fraud, see 18 U.S.C.A. § 1029(a)(2) (West Supp.1996), maintaining that the district court erred in refusing to depart downward based upon his post-offense rehabilitation efforts. Because the district court believed that it lacked the authоrity to depart, and because extraordinary or exceptional efforts at rehabilitation could possibly constitute a proper basis for consideration of a downward departure, we vacate the sentеnce imposed and remand to permit the district court to consider whether Brock’s rehabilitation efforts were exceptional and, if so, whether departure is warranted.
I.
The presentenee report recommended that Brock’s guideline range was 12 to 18 months imprisonment and that no basis for departure was present. Brock objected to this
*33
latter recommendation, asserting that the district court should depart downward based upon his rehabilitation efforts. The district court indicated that if it were permitted to do so, it would consider departing downward by one level to permit Brock to maintain his employment while serving a portion of his sentence in home detention and а portion in some other type of community detention center. The district court, however, correctly recognized that it was then bound by the decision of this court in
United States v. Van Dyke,
II.
This court lacks authority to review a decision of a district court not to depart from the applicable guideline range when that decision rests upon a determination that а departure is not warranted.
See United States v. Bayerle,
Congress has instructed that a district court must impose a sentence within the range that results from the proper application of the guidelines “unless the court finds that there exists an aggravating or mitigating circumstance of a kind, or to a degrеe, not adequately taken into consideration by the Sentencing Commission in formulating the guidelines that should result in a sentence different from that described.” 18 U.S.C.A. § 3553(b) (West Supp.1996). The parties agree that when the district court imposed Brock’s sentence, the law of this circuit prohibited a departure based upon post-offense rehabilitation efforts.
See Van Dyke,
Following the imposition .of Brock’s sentence by the district court, however, the Supreme Court issued its decision in
Koon v.
United States, - U.S. -,
[A] federal court's examination of whether а factor can ever be an appropriate basis for departure is limited to determining whether the Commission has proscribed, as a categorical matter, consideration of the factor. If the answer to the quеstion is no-as it will be most of the time-the sentencing court must determine whether the factor, as occurring in the particalar *34 circumstances, takes the ease outside the heartland of the applicable [gjuideline.
Koon,
— U.S. at-,
Read in isolation, the assertion by the Court in
Koon
that all factors except those expressly prohibited by the Commission may furnish an appropriate foundation for departure could be viewed as undermining the sentencing guidelines and Congress’ goal оf eliminating unwarranted disparity in the sentencing of similar offenders for similar offenses. Read in conjunction with the deferential abuse-of-discretion standard the Court announced was appropriate for reviewing departure decisions of the district courts, it might be argued that
Koon
sounds the death knell for Congress’ goal of consistency in sentencing. Such fears are unfounded because, obviously, this was not what the Court intended, nor what will result, if the standards that the Court established are properly applied. For in the same breath in which the Court acknowledged that only those factors expressly forbidden by the Commission may be excluded categorically as bases for departure, the Court carefully affirmed that departures from the guidelines must be the exception, not the rule. Indeed, the Court emphasized that in order for a departure to be an appropriate exercise of the discretion granted to a district court, the unique circumstances presented must take the case out of the heartland of the applicable guideline and make the situation one in which a sentence outside the guideline range should result.
See id.
at -,
When a factor has not been forbidden by the Commission — and it is thus a potential basis for departure — in order to determine whether that factor actually may support a departure, the court must ascertain into which of the following categories the factor falls: (1) the factor was encouraged by the Commission as a basis for departure and was either (a) taken into account in the apрlicable guideline itself or (b) not taken into account in the guideline; (2) the factor was discouraged by the Commission as a basis for departure; or (3) the factor was unmentioned by the Commission.
See id.
at-,
If a factor is one upon which the Commission encourages departure, and it is not taken into account by the applicable guideline, a court may exercise its discretion and depart on that basis.
See Koon,
— U.S. at -,
Applying these principles, it is clear that our holding in Van Dyke that post-offense rehabilitation can never form a proper basis for departure has been effectively overruled by Koon . The Sentencing Commission has not expressly forbidden consideration of post-offense rehabilitation efforts; thus, they potentially may serve as a basis for departure. Because the acceptance of responsibility guideline takes such efforts into account in determining a defendant’s eligibility for that аdjustment, however, post-offense rehabilitation may provide an appropriate ground for departure only when present to such an exceptional degree that the situation cannot be considered typiсal of those circumstances in which an acceptance of responsibility adjustment is granted.
III.
The district court was governed by Van Dyke and did not have the benefit of the Koon decision when it ruled. Therefore, we vacate Brock’s sentence and remand for further proceedings. 2
VACATED AND REMANDED FOR RE-SENTENCING
Notes
. The district court stаyed imposition of the sentence pending this appeal.
. Recognizing that it could not depart, the district court had no occasion to set forth specific factual findings concerning what efforts on Brock’s part it considered exceptional enough to make the case atypical of those situations in which the acceptance of responsibility adjustment usually applies based on post-offense rehabilitation. We wish to еmphasize the importance of such factual findings to our appellate function if further review of the sentence imposed on remand is required.
Cf. United States v. Harvey,
