M46.40 ICD-10-CM Code: Discitis, unspecified, site unspecified
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 551 — MEDICAL BACK PROBLEMS WITH MCC (MDC 08)
- MS-DRG 552 — MEDICAL BACK PROBLEMS WITHOUT MCC (MDC 08)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Discitis, unspecified, site unspecified is a billable ICD-10-CM diagnosis code (M46.40).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to M46.40 in its code family, with their registry titles.
- M46.36 — Infection of intervertebral disc (pyogenic), lumbar region
- M46.37 — Infection of intervertebral disc (pyogenic), lumbosacral region
- M46.38 — Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region
- M46.39 — Infection of intervertebral disc (pyogenic), multiple sites in spine
- M46.4 — Discitis, unspecified
- M46.41 — Discitis, unspecified, occipito-atlanto-axial region
- M46.42 — Discitis, unspecified, cervical region
- M46.43 — Discitis, unspecified, cervicothoracic region
- M46.44 — Discitis, unspecified, thoracic region
- M46.45 — Discitis, unspecified, thoracolumbar region
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Discitis, diskitis