ICD-10 Code for Anesthesia
The ICD-10-CM code for anesthesia is R20.0 — Anesthesia of skin. This is the code the Alphabetic Index gives for anesthesia with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Billable
Which anesthesia code should you use?
The Alphabetic Index lists 10 codes under Anesthesia, anesthetic. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| complication or reaction NEC | T88.59 | Other complications of anesthesia | not billable |
| cornea | H18.81 | Anesthesia and hypoesthesia of cornea | not billable |
| dissociative | F44.6 | Conversion disorder with sensory symptom or deficit | |
| functional | F44.6 | Conversion disorder with sensory symptom or deficit | |
| hyperesthetic, thalamic | G89.0 | Central pain syndrome | |
| hysterical | F44.6 | Conversion disorder with sensory symptom or deficit | |
| local skin lesion | R20.0 | Anesthesia of skin | |
| sexual | F52.1 | Sexual aversion disorder | |
| shock | T88.2 | Shock due to anesthesia | not billable |
| skin | R20.0 | Anesthesia of skin | |
| testicular | N50.9 | Disorder of male genital organs, unspecified |
Anesthesia complication or reaction NEC
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources