M99 Biomechanical lesions, not elsewhere classified

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Biomechanical lesions, not elsewhere classified is M99 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
M99: Biomechanical lesions, not elsewhere classified (M99)
Category M99
101 codes (91 billable)
FY2026 Status
Stable since FY2024

Notes

  • This category should not be used if the condition can be classified elsewhere.

Official Coding Guidelines

Chapter 13 header

13. Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13
Osteoporosis without pathological fracture (M81)

Category M81, Osteoporosis without current pathological fracture, is for use for patients with osteoporosis who do not currently have a pathologic fracture due to the osteoporosis, even if they have had a fracture in the past. For patients with a history of osteoporosis fractures, status code Z87.310, Personal history of (healed) osteoporosis fracture, should follow the code from M81.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.13.d.1

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference M99 with the canonical source and edition:

M99 — Biomechanical lesions, not elsewhere classified. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/M99

Canonical URL: https://icd10codingpro.com/codes/M99

Related Codes

All Codes in M99

Every most-specific code under M99 Biomechanical lesions, not elsewhere classified (91 codes):

Show the complete M99 code list
M99.00 Segmental and somatic dysfunction of head region 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 M99.10 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 M99.20 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 M99.30 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 M99.36 Osseous stenosis of neural canal of lower extremity M99.37 Osseous stenosis of neural canal of upper extremity M99.38 Osseous stenosis of neural canal of rib cage M99.39 Osseous stenosis of neural canal of abdomen and other regions M99.40 Connective tissue stenosis of neural canal of head region M99.41 Connective tissue stenosis of neural canal of cervical region M99.42 Connective tissue stenosis of neural canal of thoracic region M99.43 Connective tissue stenosis of neural canal of lumbar region M99.44 Connective tissue stenosis of neural canal of sacral region M99.45 Connective tissue stenosis of neural canal of pelvic region M99.46 Connective tissue stenosis of neural canal of lower extremity M99.47 Connective tissue stenosis of neural canal of upper extremity M99.48 Connective tissue stenosis of neural canal of rib cage M99.49 Connective tissue stenosis of neural canal of abdomen and other regions M99.50 Intervertebral disc stenosis of neural canal of head region M99.51 Intervertebral disc stenosis of neural canal of cervical region M99.52 Intervertebral disc stenosis of neural canal of thoracic region M99.53 Intervertebral disc stenosis of neural canal of lumbar region M99.54 Intervertebral disc stenosis of neural canal of sacral region M99.55 Intervertebral disc stenosis of neural canal of pelvic region M99.56 Intervertebral disc stenosis of neural canal of lower extremity M99.57 Intervertebral disc stenosis of neural canal of upper extremity M99.58 Intervertebral disc stenosis of neural canal of rib cage M99.59 Intervertebral disc stenosis of neural canal of abdomen and other regions M99.60 Osseous and subluxation stenosis of intervertebral foramina of head region M99.61 Osseous and subluxation stenosis of intervertebral foramina of cervical region M99.62 Osseous and subluxation stenosis of intervertebral foramina of thoracic region M99.63 Osseous and subluxation stenosis of intervertebral foramina of lumbar region M99.64 Osseous and subluxation stenosis of intervertebral foramina of sacral region M99.65 Osseous and subluxation stenosis of intervertebral foramina of pelvic region M99.66 Osseous and subluxation stenosis of intervertebral foramina of lower extremity M99.67 Osseous and subluxation stenosis of intervertebral foramina of upper extremity M99.68 Osseous and subluxation stenosis of intervertebral foramina of rib cage M99.69 Osseous and subluxation stenosis of intervertebral foramina of abdomen and other regions M99.70 Connective tissue and disc stenosis of intervertebral foramina of head region M99.71 Connective tissue and disc stenosis of intervertebral foramina of cervical region M99.72 Connective tissue and disc stenosis of intervertebral foramina of thoracic region M99.73 Connective tissue and disc stenosis of intervertebral foramina of lumbar region M99.74 Connective tissue and disc stenosis of intervertebral foramina of sacral region M99.75 Connective tissue and disc stenosis of intervertebral foramina of pelvic region M99.76 Connective tissue and disc stenosis of intervertebral foramina of lower extremity M99.77 Connective tissue and disc stenosis of intervertebral foramina of upper extremity M99.78 Connective tissue and disc stenosis of intervertebral foramina of rib cage M99.79 Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regions M99.80 Other biomechanical lesions of head region M99.81 Other biomechanical lesions of cervical region M99.82 Other biomechanical lesions of thoracic region M99.83 Other biomechanical lesions of lumbar region M99.84 Other biomechanical lesions of sacral region M99.85 Other biomechanical lesions of pelvic region M99.86 Other biomechanical lesions of lower extremity M99.87 Other biomechanical lesions of upper extremity M99.88 Other biomechanical lesions of rib cage M99.89 Other biomechanical lesions of abdomen and other regions M99.9 Biomechanical lesion, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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