Other specified disorders of nervous system in diseases classified elsewhere
Billable / specific
G99.8 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96) (from G99)
- certain infectious and parasitic diseases (A00-B99) (from G99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A) (from G99)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from G99)
- endocrine, nutritional and metabolic diseases (E00-E88) (from G99)
- injury, poisoning and certain other consequences of external causes (S00-T88) (from G99)
- neoplasms (C00-D49) (from G99)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from G99)
Code first
Sequence the underlying condition first.
Parent code
- G99Other disorders of nervous system in diseases classified elsewhereHeader