US · guidance
CMS Pub. 100-04, ch. 23, § 10.4
ICD Procedure Codes
ICD procedure codes are required for inpatient hospital Part A claims only. Healthcare Common Procedure
Code System (HCPCS) codes are used for reporting procedures on other claim types. Inpatient hospital
claims require reporting the principal procedure if a significant procedure occurred during the
hospitalization. For information of the selection of the principal procedure, see the Official ICD-10-PCS
coding guidelines posted with the annual updates to ICD-10-PCS posted at
http://www.cms.gov/Medicare/Coding/ICD10/index.html
The principal procedure code and other procedure codes shown on the bill must be the full ICD-9-CM,
Volume 3, or ICD-10-PCS procedure code, including all applicable digits, up to seven digits.
Up to twenty four significant procedures other than the principal procedure may be reported.
History
(Rev. 3081, Issued: 09-26-14, Effective: Upon Implementation of ICD-10, Implementation: Upon Implementation of ICD-10)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
cdb218b9c53833b633a54672cbe61647054de2e601295dddcf56289d5a32ef88
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