Bruxism (Teeth Grinding)

50%

DC 9905 by analogy — Interincisal range 0 to 10 millimeters (mm) of maximum unassisted vertical opening, WITH dietary restrictions to all mechanically altered foods. (Verbatim § 4.150 DC 9905.) Bruxism rarely reaches this tier absent severe TMJ degeneration; document with measured ROM + physician-prescribed dietary modification per Note 3.

40%

DC 9905 by analogy — One of: (i) 0 to 10 mm interincisal range WITHOUT dietary restrictions; (ii) 11 to 20 mm WITH dietary restrictions to all mechanically altered foods; (iii) 21 to 29 mm WITH dietary restrictions to full liquid and pureed foods. (Verbatim § 4.150 DC 9905.)

30%

DC 9905 by analogy — One of: (i) 11 to 20 mm interincisal range WITHOUT dietary restrictions; (ii) 21 to 29 mm WITH dietary restrictions to soft and semi-solid foods; (iii) 30 to 34 mm WITH dietary restrictions to full liquid and pureed foods. (Verbatim § 4.150 DC 9905.)

20%

DC 9905 by analogy — One of: (i) 21 to 29 mm interincisal range WITHOUT dietary restrictions to mechanically altered foods; (ii) 30 to 34 mm WITH dietary restrictions to soft and semi-solid foods. (Verbatim § 4.150 DC 9905.)

10%

DC 9905 by analogy — 30 to 34 mm interincisal range WITHOUT dietary restrictions to mechanically altered foods; OR lateral excursion range of motion 0 to 4 mm (single 10% rating; Note 1 prohibits combining limited interincisal with limited lateral excursion). (Verbatim § 4.150 DC 9905.) Most documented bruxism with TMJ residuals lands at this tier.

0%

Documented bruxism diagnosis (dental wear pattern, witnessed grinding, polysomnography rhythmic masticatory muscle activity, night-guard prescription) without limitation of interincisal range above 34 mm and without separately-rateable residuals (no compensable tooth loss under DC 9913, no separately-rateable headache).