I don't have a schedule HC, just a 1095C. It wont complete my state return until I input schedule HC info which I don't have.

If you have no 1099-HC, you will have to determine whether your insurance meets MCC requirements. See here for more info:http://www.mass.gov/dor/individuals/taxpayer-help-and-resources/health-care-reform-information/frequ...

Once you have done that, complete the Health Insurance interview as follows:

Enter the insurance company name and your subscriber number, but leave the FID blank. When asked if you received a 1099-HC, answer "No". You may see an error during the state review, which you can ignore. TurboTax may not allow you to e-file, in which case you'll need to print and mail your MA tax return.

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Form 1099-HC

• The 1099-HC form is a Massachusetts document which serves as proof of health insurance coverage for MA adult residents.  Every MA resident who has insurance will receive an annual 1099-HC form which is completed and provided by your insurance carrier. 
• You do not need to file Form 1099-HC.The form is informational and should be used to complete a new Schedule HC form with your MA residential tax form. Schedule HC is now a required tax return attachment for all MA residents.

Ask your insurance carrier to provide you with a 1099-HC; they are required to do so.