ICD-10-CM
ICD-10 code for Lumbago, lumbalgia: M54.50
The ICD-10-CM index points "Lumbago, lumbalgia" to M54.50, Low back pain, unspecified. M54.50 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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