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  4. G89-G99
  5. Pain, not elsewhere classified (G89)

Pain, not elsewhere classified (G89)

ICD-10 code G89 covers categories of pain that do not fit into other specific classifications. These codes describe various types of pain, including acute, chronic, central, postprocedural, and neoplasm-related pain.

This section is used to accurately code and document pain conditions like central pain syndrome (G89.0), also known as central neuropathic pain or thalamic pain, which arises from nerve damage within the central nervous system. Acute pain, not elsewhere classified (G89.1), includes trauma-related pain (G89.11) and acute post-thoracotomy pain (G89.12). Postprocedural pain codes (G89.18 and G89.28) cover pain after surgeries such as mastectomy or hernia repair. Chronic pain codes (G89.2 series) address ongoing pain due to trauma, surgery, or other causes, including chronic post-thoracotomy pain (G89.22) and generalized chronic pain (G89.29), covering conditions like chronic back pain and neuropathic pain. The section also recognizes pain from neoplasms (G89.3) and chronic pain syndrome (G89.4).

Instructional Notations

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

  • related psychological factors associated with pain F45.42

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • generalized pain NOS R52
  • pain disorders exclusively related to psychological factors F45.41
  • pain NOS R52

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Breakthrough Pain

Acute pain that comes on rapidly despite the use of pain medication.

Chronic Pain

Aching sensation that persists for more than a few months. It may or may not be associated with trauma or disease, and may persist after the initial injury has healed. Its localization, character, and timing are more vague than with acute pain.

Visceral Pain

Pain originating from internal organs (VISCERA) associated with autonomic phenomena (PALLOR; SWEATING; NAUSEA; and VOMITING). It often becomes a REFERRED PAIN.