ICD-10-CM tabular list

Chapter 6: Diseases of the nervous system

G00-G99

Chapter 6 of the ICD-10-CM tabular list covers diseases of the nervous system, codes G00-G99. It holds 932 codes across 11 blocks, of which 700 are billable and 232 are header codes that cannot go on a claim.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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)

Risk adjustment in Chapter 6

254 of this chapter’s codes map to a CMS-HCC, which means the diagnosis carries a risk-adjustment payment when it is documented and coded to the level the record supports.

HCC 201 Seizure Disorders and Convulsions
HCC 254 Monoplegia, Other Paralytic Syndromes
HCC 197 Muscular Dystrophy
HCC 182 Spinal Cord Disorders/Injuries
HCC 198 Multiple Sclerosis
HCC 127 Dementia, Mild or Unspecified

Excludes2 — not included here, but may coexist

Risk adjustment in Chapter 6

Blocks in this chapter