G54.9
Nerve root and plexus disorder, unspecified
BillableComplete code, valid to report
G54.9 (also written G549) is a billable ICD-10-CM diagnosis code for nerve root and plexus disorder, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 10 codes in category G54 (Nerve root and plexus disorders). The Alphabetic Index lists it under 4 entries. Its coding notes include 15 Excludes1 entries and 8 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Inherited from G54 Nerve root and plexus disorders
- current traumatic nerve root and plexus disorders - see nerve injury by body region
- intervertebral disc disorders (M50-M51)
- neuralgia or neuritis NOS (M79.2)
- neuritis or radiculitis brachial NOS (M54.13)
- neuritis or radiculitis lumbar NOS (M54.16)
- neuritis or radiculitis lumbosacral NOS (M54.17)
- neuritis or radiculitis thoracic NOS (M54.14)
- radiculitis NOS (M54.10)
- radiculopathy NOS (M54.10)
- spondylosis (M47.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 4 entries