Final answer:
The ICD-10 code for segmental dysfunction of the sacrum is M99.33.
Step-by-step explanation:
The ICD-10 code for segmental dysfunction of the sacrum is M99.33. The ICD-10, or International Classification of Diseases, Tenth Revision, is a system used by healthcare providers to categorize and code diagnoses and procedures. In this case, the code M99.33 specifically refers to a segmental dysfunction of the sacrum. The code M99.30, M99.31, and M99.32 are not the correct codes for this condition.