M54.50: a careful lookup for low back pain

The official FY2027 title of M54.50 is “Low back pain, unspecified.” It sits within M54.5, Low back pain, in the musculoskeletal chapter. The title describes a classification entry; it does not diagnose the cause of a person’s pain.

A search for “low back pain ICD-10” can reach this page quickly. That convenience should lead into verification of the documented diagnosis, rather than substitute for it.

• M54.50 — Low back pain, unspecified
• M54.51 — Vertebrogenic low back pain
• M54.59 — Other low back pain

These entries are not interchangeable labels. Do not infer a vertebrogenic diagnosis from a general symptom description, or select “other” simply to avoid an unspecified code. The documentation and the index-to-tabular instructions determine the appropriate assignment.

Review the M54.5 category’s exclusions as well as the individual entry. In the FY2027 tabular data, its Excludes1 notes cover lumbar or lumbosacral disc degeneration with discogenic back pain only, low back strain, lumbago due to intervertebral disc displacement, and lumbago with sciatica. Those instructions point to different coding paths; they do not establish that any of those conditions is present.

The complete source wording and linked codes are available on the M54.5 reference page. Read our exclusion-note guide for the distinction between note types and the official Excludes1 exception.

An unspecified code can be appropriate when the record does not support a more specific assignment. Adding unsupported detail is not an improvement in accuracy. For the complete principles, consult sections I.A.9 and I.B.18 of the official guidelines.

Code Hub retains the official English titles across its reference interfaces. If you browse in another language, compare the original title and notes carefully. For more context on labels in search results, read billable, specific and unspecified codes.