M99.00 is the authoritative medical code for Segmental and somatic dysfunction of head region. This classification is used in medical billing and clinical recording to specify the clinical criteria for segmental and somatic dysfunction of head region (ICD-10-CM M99.00), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Segmental and somatic dysfunction of head region M99.00 is a billable ICD-10-CM diagnosis code, valid for claim submission. It is classified under category M99 (Biomechanical lesions, not elsewhere classified), within the Biomechanical lesions, not elsewhere classified M99-M99 block, within Chapter 13, Diseases of the Musculoskeletal System and Connective Tissue M00-M99. The official tabular list attaches no additional inclusion or exclusion notes to this code.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as M99.00, with their registry titles.
- M99 — Biomechanical lesions, not elsewhere classified
- M99.0 — Segmental and somatic dysfunction
- M99.01 — Segmental and somatic dysfunction of cervical region
- M99.02 — Segmental and somatic dysfunction of thoracic region
- M99.03 — Segmental and somatic dysfunction of lumbar region
- M99.04 — Segmental and somatic dysfunction of sacral region
- M99.05 — Segmental and somatic dysfunction of pelvic region
- M99.06 — Segmental and somatic dysfunction of lower extremity
- M99.07 — Segmental and somatic dysfunction of upper extremity
- M99.08 — Segmental and somatic dysfunction of rib cage
- M99.09 — Segmental and somatic dysfunction of abdomen and other regions
- M99.1 — Subluxation complex (vertebral)
- M99.10 — Subluxation complex (vertebral) of head region
- M99.11 — Subluxation complex (vertebral) of cervical region
- M99.12 — Subluxation complex (vertebral) of thoracic region
- M99.13 — Subluxation complex (vertebral) of lumbar region
- M99.14 — Subluxation complex (vertebral) of sacral region
- M99.15 — Subluxation complex (vertebral) of pelvic region
- M99.16 — Subluxation complex (vertebral) of lower extremity
- M99.17 — Subluxation complex (vertebral) of upper extremity
- M99.18 — Subluxation complex (vertebral) of rib cage
- M99.19 — Subluxation complex (vertebral) of abdomen and other regions
- M99.2 — Subluxation stenosis of neural canal
- M99.20 — Subluxation stenosis of neural canal of head region
- M99.21 — Subluxation stenosis of neural canal of cervical region
- M99.22 — Subluxation stenosis of neural canal of thoracic region
- M99.23 — Subluxation stenosis of neural canal of lumbar region
- M99.24 — Subluxation stenosis of neural canal of sacral region
- M99.25 — Subluxation stenosis of neural canal of pelvic region
- M99.26 — Subluxation stenosis of neural canal of lower extremity
- M99.27 — Subluxation stenosis of neural canal of upper extremity
- M99.28 — Subluxation stenosis of neural canal of rib cage
- M99.29 — Subluxation stenosis of neural canal of abdomen and other regions
- M99.3 — Osseous stenosis of neural canal
- M99.30 — Osseous stenosis of neural canal of head region
- M99.31 — Osseous stenosis of neural canal of cervical region
- M99.32 — Osseous stenosis of neural canal of thoracic region
- M99.33 — Osseous stenosis of neural canal of lumbar region
- M99.34 — Osseous stenosis of neural canal of sacral region
- M99.35 — Osseous stenosis of neural canal of pelvic region
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Dysfunction, somatic, head region
- Dysfunction, somatic, occipitocervical
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: