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ICD-10-CM 2027

ICD-10 code for maintenance

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Maintenance (encounter for)”. Page updated September 29, 2026.

About coding maintenance

The official ICD-10-CM index doesn't give a single default code for maintenance; the code depends on the details below.

More specific maintenance codes (official index)

  • antineoplastic chemotherapy Z51.11 — Encounter for antineoplastic chemotherapy
  • antineoplastic radiation therapy Z51.0 — Encounter for antineoplastic radiation therapy
  • methadone F11.20 — Opioid dependence, uncomplicated

Common questions about maintenance ICD-10 codes

What is the ICD-10 code for antineoplastic chemotherapy maintenance?

Z51.11 — Encounter for antineoplastic chemotherapy.

What is the ICD-10 code for antineoplastic radiation therapy maintenance?

Z51.0 — Encounter for antineoplastic radiation therapy.

What is the ICD-10 code for methadone maintenance?

F11.20 — Opioid dependence, uncomplicated.