ICD-10 Code for Lumbago
The ICD-10-CM code for lumbago is M54.50 — Low back pain, unspecified. This is the code the Alphabetic Index gives for lumbago with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M54.50 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which lumbago code should you use?
The Alphabetic Index lists 4 codes under Lumbago, lumbalgia. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
Lumbago with sciatica
| due to intervertebral disc disorder | M51.17 | Intervertebral disc disorders with radiculopathy, lumbosacral region |
Lumbago due to displacement, intervertebral disc
| with sciatica | M51.17 | Intervertebral disc disorders with radiculopathy, lumbosacral region |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources