Dr. Thomas M. D’Auria appeals from the order of August 30, 1984 entered in the Court of Common Pleas of Fayette County denying his motion for summary judgment and entering judgment in favor of appellees. 1 The sole question in this appeal is whether three insurance companies had a duty to defend the appellant in a malрractice suit filed against him. We hold they did not.
In 1981, Dr. D’Auria, who practiced pediatric medicine in Uniontown, Pennsylvania, was sued for malpractice by a former patient, Mr. Gregory Egnot. Egnot was a patient of Dr. D’Auria’s from the time of his birth in 1957 until 1963. In Egnot’s complaint against Dr. D’Auria, he alleged that D’Auria was negligent and carelеss both during and after the time he was D’Auria’s patient and avers that this negligence was a cause of the renal failure he suffered in 1979.
Each of the three insurance companies involved in this dispute did not insure appellant until long after he treated Egnot. Hartford insured him from 7/22/73 to 7/22/76. Argonaut insured him from 7/22/76 to 1/1/78. PMSLIC insured him from 1/1/78 to 6/30/82. All three provided “occurrence” type policies. “An ‘occurrence’ policy protects the policyholder from liability for any act done while the policy is in effect, whereas a ‘claims made’ policy protects the holder only against claims made during the life of the poliсy.”
St. Paul Fire & Marine Insurance Co. v. Barry,
“[T]he company shall have the right and duty to defend any suit against the insured seeking such damages, even if any of the allegations of the suit are groundless, false or fraudulent____”
II] The duty to defend is separate from and greater than the duty to indemnify.
Pacific Indem. Co. v. Linn,
590
*234
F.Supp. 643 (E.D.Pa.1984)
aff'd.
“[I]f the plaintiff’s complaint against the insured alleged facts which would have supported a recovery coverеd by the policy, it was the duty of the defendant to undertake the defence, until it could confine the claim to a recovery that the policy did not cover.”
Lee v. Aetna Casualty & Surety Company,
Even though the insurance policy states that the insurer must defend against allegations which are groundless, false, or fraudulent, this does not mean that the insurer has a duty to defend
any
suit filed against the insured. The duty to defend is limited only to those claims
covered by the policy. Warner v. Employers’ Liability Assurance Corpоration,
In the instant case, Egnot’s complaint against the doctor alleged that when the doctor treated him from 1957 to 1963, he was negligent or careless in failing to diagnose and have treated a medical condition that was a consequence “of a lower urinary tract obstruction secondary to posterior urethral valves.” 2 This kidney condition was surgically treated in December of 1962 or January of 1963 by another physician. After 1963, Egnot was nеver again treated by D’Auria. Egnot experienced renal failure in March of 1979. He attributes the cause of his renal failure to 1) D’Auria’s failure to diagnose and have treated the aforementioned condition which was eventually treated by surgery in December of 1962 or January of 1963, and 2) appellant’s failure to provide appropriate follow-up care and treatment *236 after Egnot’s release from the hospital in January, 1963. 3 The complaint states: “As a combination of the foregoing occurrences, Plaintiff suffered loss of renal tissue which results in renal failure, which loss of renal tissue could have been avoided or minimized if Plaintiff had received appropriate diagnosis, care and treatment throughout the course of his renal condition.”
We must determine if the facts alleged on the face of the complaint state a claim which is covered by any of the three policies. If so, there is a duty to defend. Because these policies were “occurrence” policies, we must decide whether the facts allege an “occurrence” that falls within any of the policies’ coverages.
We will refer to and rely upon occurrence cases which deal with
indemnity.
We believe that these cases may be appropriately used in a
duty to defend
context. The major difference between indemnity and duty to defend cases is that in the latter, the complaint is the sole guide to the facts. As such, we shall use the complaint as our sole guide. The “time of the occurrence” has spawned numerous reported decisions and a fair amount of confusion.
See
Annot.,
In determining whether the facts allege an “occurrence” that falls within any of the three policies’ coverages, we must ascertain what is the “occurrence” alleged, and when it happened. The three insurance policies at issue insured Dr. D’Auria from 7/22/73 to 6/30/82. If an “occurrence” is alleged to fall anywhere within that time period, one or more of the insurance companies has a duty to defend.
We must first determine how many “occurrences” are present in Egnot’s complaint. “The general rule is thаt an occurrence is determined by the cause or causes of the resulting injury. ‘[T]he majority of jurisdictions employes
*237
[sic] the ‘cause theory’.....Using this analysis, the court asks if ‘[t]here was but one proximate, uninterrupted, and continuing cause which resulted in all of the injuries and damage.’ ’ ”
Appalachian Ins. Co. v. Liberty Mut. Ins. Co.,
Even if completely true, we find that Egnot’s complaint alleges only one occurrence. The cause of Mr. Egnot’s alleged renal failure was the alleged mistreatment of his condition by Dr. D’Auria. We note that the complaint superfiсially states two causes for the renal failure: 1) Dr. D’Auria’s pre-1963 failure to diagnose and have treated the condition that was eventually treated in January 1963, and 2) his post-1963 failure to adequately follow up and care for Egnot. Nevertheless, we believe that the substance of the complaint allеges only one cause. The complaint indicates that the doctor mishandled Egnot’s treatment in not diagnosing or acting quickly enough to treat the condition that contributed to the renal failure, and also in not recognizing the severity of that condition and treating it accordingly. We do not think that it is appropriate to examine the doctor’s alleged mishandling of a case in minutia in order to single out individual instances of want of care and to label them as separate “causes”. Nor do we think it appropriate to label the doctor’s failure to follow-up on a misdiagnosed case after the pаtient has left his care as a separate and distinct cause of an injury which later befalls the former patient. Appellant alleges that the three policies cover *238 injuries which arise out of the failure to render professional services. This does not alter our conclusion. Mr. Egnot left Dr. D’Auria’s care in 1963 and developеd renal failure in 1979. We believe that if the doctor’s neglect was a cause of Egnot’s renal failure, it would be because of his mishandling and misdiagnosis of the case while Egnot was a patient of his. The commonly accepted nature of the practice of medicine commends this result. In every instance in which a doctor mistreats a patient, whether by misdiagnosis or other negligence, the patient may leave the doctor’s care only to later experience consequent injury and losses due to the mistreatment. In such a case, it would forsake common sense to say that there are multiple causes of the injury, the mistreatment and the doctor’s repeated failure to follow up. Certainly, one trained in medicine might possess the acumen to single out myriad mistakes in a doctor’s treatment of a patient and to label each as a “cause” of resulting injury. We believe, however, that to divide the doctor’s mistreatment into multiple causes here would be an artificial and arbitrary division. The substance of Egnot’s complaint alleges one cause, Dr. D’Auria’s mistreatment of his renal condition.
Having determined that there was one “occurrence”, we must now determine
when
it took place. An occurrence happens when the injurious effects of the negligent act
first manifest themselves
in a way that would put a reasonable person on notice of injury. In
Appalachian Ins. Co. v. Liberty Mut. Ins. Co., supra,
the court stated that “[wjhile the ‘cause’ test is appropriate for determining whether there is a single occurrence or multiple occurrences, it is not applicаble in determining when an occurrence takes place. We hold that the determination of when an occurrence happens must be made by reference to the time when the injurious effects of the occurrence took place.”
Id.
at 61-62. The party alleging the negligence need not have actually
discovered
the injurious effects at the time they first manifested themselves.
See e.g., Silver Eagle Co. v. National Union Fire Ins. Co.,
In
Gulf v. Dolan, Fertig, and Curtis,
— Fla. —,
Turning to the instant case, we must decide at what point in time the injurious effects of the doctor’s negligence first manifested themselves in a way that could be ascertained by reasonable diligence. We hold that the effects of the negligence first manifested themselves prior to the coverage periods of any of the three policies. Therefore, none of the appellee insurance companies had a duty to defend.
Mr. Egnot’s complaint avers that his renаl failure in 1979 was the culmination of ongoing renal deterioration which should have been diagnosed in 1963. While he does not aver that total renal failure was apparent in 1963, we nevertheless believe that, according to Egnot’s complaint, the injury due to the doctor’s negligence was first manifested in a way that сould be ascertained by reasonable diligence well before any of the three policies took effect in 1973. The allegation of ongoing renal deterioration which should have been diagnosed and treated in 1963 seems to us to be a definite injury.
Decisions from other courts indicate that an “occurrence” cannot happen until the injury or damage is irremediable.
See e.g., Bartholomew v. Insurance Company of North America,
Moreover, we think that as a matter of policy, the three appellee insurance companies should not be forced to defend for an injury which was, at least in embryonic form, reasonably apparent thirteen years before any of them *241 undertook to provide occurrence coverage. “[A]n insured cannot insure against something which has already begun.” Appalachiаn Insurance Co. v. Liberty Mut. Insurance Co., supra.
Judgment affirmed.
Notes
. The rights of the other appellee, Zurich Insurance Company, are not affected by our decision, and we need not include it in our discussion.
. Egnot also alleged that another doctor’s negligence was also a cause of his renal failure. This allegation is not pertinent to our discussion.
. It is unclear whether Dr. D’Auria treated Egnot after his release from the hospital. Dr. D’Auria did not treat Egnot after 1963.
