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ICD-10-CM 2027

ICD-10 code for lumbosacral region spondylolysis

M43.07

Spondylolysis, lumbosacral region

✓ Billable / specific

From the official ICD-10-CM alphabetic index entry “Spondylolysis (acquired) › lumbosacral region”. Page updated September 29, 2026.

About coding lumbosacral region spondylolysis

The ICD-10-CM code for lumbosacral region spondylolysis is M43.07 (Spondylolysis, lumbosacral region). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M43.07.

Within M43.0 (Spondylolysis), M43.07 is specifically for Spondylolysis, lumbosacral region. Related codes cover site unspecified (M43.00), occipito-atlanto-axial region (M43.01), cervical region (M43.02), cervicothoracic region (M43.03), thoracic region (M43.04), thoracolumbar region (M43.05), lumbar region (M43.06), sacral and sacrococcygeal region (M43.08) and 1 more.

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.

More specific lumbosacral region spondylolysis codes (official index)

  • with disproportion (fetopelvic) O33.0 — Maternal care for disproportion due to deformity of maternal pelvic bones
  • causing obstructed labor O65.8 — Obstructed labor due to other maternal pelvic abnormalities

Common questions about lumbosacral region spondylolysis ICD-10 codes

What is the ICD-10 code for lumbosacral region spondylolysis?

M43.07 — Spondylolysis, lumbosacral region. More specific codes apply when the documentation supports them: O33.0, O65.8.

Is M43.07 billable?

Yes. M43.07 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M43.07 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M43.07 as a principal diagnosis.

Is M43.07 a CC or MCC?

No. M43.07 is neither a CC nor an MCC under MS-DRG v44.0.