M99.4

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Connective tissue stenosis of neural canal

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).
General instructions are available for the parent sections:

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M99Biomechanical lesions, not elsewhere classified
M99.4Connective tissue stenosis of neural canalNot billable
M99.40Connective tissue stenosis of neural canal of head regionBillable
M99.41Connective tissue stenosis of neural canal of cervical regionBillable
M99.42Connective tissue stenosis of neural canal of thoracic regionBillable
M99.43Connective tissue stenosis of neural canal of lumbar regionBillable
M99.44Connective tissue stenosis of neural canal of sacral regionBillable
M99.45Connective tissue stenosis of neural canal of pelvic regionBillable
M99.46Connective tissue stenosis of neural canal of lower extremityBillable
M99.47Connective tissue stenosis of neural canal of upper extremityBillable
M99.48Connective tissue stenosis of neural canal of rib cageBillable
M99.49Connective tissue stenosis of neural canal of abdomen and other regionsBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M99.4:

chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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