G89.2
Chronic pain, not elsewhere classified
G89.2 is a non-billable ICD-10-CM code header for chronic 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 G89.21 Chronic pain due to trauma, G89.22 Chronic post-thoracotomy pain, G89.28 Other chronic postprocedural pain and G89.29 Other chronic pain. Its coding notes include a Code also instruction, 11 Excludes1 entries and 35 Excludes2 entries.
Guidelines tips
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.
There is no time frame for when pain becomes chronic. Central pain syndrome and chronic pain syndrome are different from chronic pain and are coded only when the provider documents them.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- causalgia, lower limb (G57.7-)
- causalgia, upper limb (G56.4-)
- central pain syndrome (G89.0)
- chronic pain syndrome (G89.4)
- complex regional pain syndrome II, lower limb (G57.7-)
- complex regional pain syndrome II, upper limb (G56.4-)
- neoplasm related chronic pain (G89.3)
- reflex sympathetic dystrophy (G90.5-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- atypical face pain (G50.1)
- headache syndromes (G44.-)
- localized pain, unspecified type - code to pain by site, such as:
- abdomen pain (R10.-)
- back pain (M54.9)
- breast pain (N64.4)
- chest pain (R07.1-R07.9)
- ear pain (H92.0-)
- eye pain (H57.1)
- headache (R51.9)
- joint pain (M25.5-)
- limb pain (M79.6-)
- lumbar region pain (M54.5-)
- painful urination (R30.9)
- pelvic and perineal pain (R10.2-)
- shoulder pain (M25.51-)
- spine pain (M54.-)
- throat pain (R07.0)
- tongue pain (K14.6)
- tooth pain (K08.8)
- renal colic (N23)
- migraines (G43.-)
- myalgia (M79.1-)
- pain from prosthetic devices, implants, and grafts (T82.84, T83.84, T84.84, T85.84-)
- phantom limb syndrome with pain (G54.6)
- vulvar vestibulitis (N94.810)
- vulvodynia (N94.81-)
Also from chapter/block level (8 notes)
- 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)