G89.1

Acute pain, not elsewhere classified

FY2027Chapter 6: Diseases of the nervous system/G89–G99 Other disorders of the nervous system

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

G89.1 is a non-billable ICD-10-CM code header for acute pain, not elsewhere classified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G89.11 Acute pain due to trauma, G89.12 Acute post-thoracotomy pain and G89.18 Other acute postprocedural pain. Its coding notes include a Code also instruction, 3 Excludes1 entries and 35 Excludes2 entries.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

G89 is for pain specified as acute, chronic, post-thoracotomy, postprocedural or neoplasm-related. It is not assigned when the underlying diagnosis is known, unless the encounter is for pain control.

Guidelines I.C.6.b.1Pain codes in category G89Read the official text

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

Inherited from G89 Pain, not elsewhere classified
  • related psychological factors associated with pain (F45.42)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from G89 Pain, not elsewhere classified
  • generalized pain NOS (R52)
  • pain disorders exclusively related to psychological factors (F45.41)
  • pain NOS (R52)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from G89 Pain, not elsewhere classified
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)

More specific codes under G89.1 3