Can ICD-9-CM procedure codes be reported on hospital outpatient claims?

Can ICD-9-CM procedure codes be reported on hospital outpatient claims? If I use HCPCS codes to report hospital outpatient services at the “required” service line level segment for a claim, may I use the ICD-9-CM procedure codes to report hospital outpatient services at the claim level “situational” segment?
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Answer : NO. ICD-9-CM procedure codes were named as the HIPAA standard code set for inpatient hospital procedures. The ICD-9-CM procedure codes were not named a HIPAA standard for procedures in other settings such as hospital outpatient services or other types of ambulatory services. Hospitals may capture the ICD-9-CM procedure codes for internally tracking or monitoring hospital outpatient services; but when conducting standard transactions, hospitals must use HCPCS codes to report outpatient services at the service line level and the claim level, if the situation applies. Even though an ICD-9-CM procedure code qualifier is available, in addition to a HCPCS code qualifier, at the “situational” claim level segment, the Transactions and Code Sets regulation states that ICD-9-CM procedure codes is the adopted standard code set for hospital inpatient services.