ICD-10-CM 2027
ICD-10 code for Lumbarization
From the official ICD-10-CM alphabetic index entry “Lumbarization, vertebra, congenital”. Page updated September 29, 2026.
About coding Lumbarization
The ICD-10-CM code for Lumbarization is Q76.49 (Other congenital malformations of spine, not associated with scoliosis).
Within Q76.4, choose Q76.49 (Other congenital malformations of spine, not associated with scoliosis) only when documentation doesn't support a more specific option: congenital kyphosis (Q76.41) and congenital lordosis (Q76.42).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Lumbarization ICD-10 codes
What is the ICD-10 code for Lumbarization?
- Q76.49 — Other congenital malformations of spine, not associated with scoliosis.
Is Q76.49 billable?
- Yes. Q76.49 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q76.49 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q76.49 as a principal diagnosis.
Is Q76.49 a CC or MCC?
- No. Q76.49 is neither a CC nor an MCC under MS-DRG v44.0.