Idaho Code § 45-704B
Every individual or association licensed or incorporated under the laws of the state of Idaho to practice medicine and surgery (hereinafter "physician") shall be entitled to a lien for the reasonable charges for medical care and treatment rendered an injured person upon any and all causes of action, suits, claims, counterclaims, or demands accruing to the person to whom such care and treatment was furnished, or to the legal representatives of such person, on account of injuries giving rise to such causes of action and that necessitate such medical care and treatment. In order to perfect the lien, the physician or his agent shall file the lien within the time prescribed and in the same general form and manner as provided in section 45-702, Idaho Code, in the office of the recorder of the county in which the physician rendered the services. The lien shall be recorded and indexed in the manner provided in section 45-703, Idaho Code. The lien shall be enforced or released in the manner provided in section 45-704, Idaho Code. If the claimant of the lien prevails in an action to enforce the lien, the court may allow reasonable attorney's fees and disbursements.
Idaho Code § 45-704B