M99.77 – Connective tissue and disc stenosis of intervertebral foramina of upper extremity
ICD-10-CM 2027 diagnosis code · Biomechanical lesions, not elsewhere classified (M99)
- Code
M99.77(claims format:M9977)- Description
- Connective tissue and disc stenosis of intervertebral foramina of upper extremity
- Short description
- Conn tiss and disc stenosis of intvrt foramina of up extrem
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M99 Biomechanical lesions, not elsewhere classified (M99)
- Parent codes
- M99 › M99.7
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M99 – Biomechanical lesions, not elsewhere classified
- This category should not be used if the condition can be classified elsewhere.
Index terms for M99.77
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M99.7
- M99.70 – Connective tissue and disc stenosis of intervertebral foramina of head regionBillable
- M99.71 – Connective tissue and disc stenosis of intervertebral foramina of cervical regionBillable
- M99.72 – Connective tissue and disc stenosis of intervertebral foramina of thoracic regionBillable
- M99.73 – Connective tissue and disc stenosis of intervertebral foramina of lumbar regionBillable
- M99.74 – Connective tissue and disc stenosis of intervertebral foramina of sacral regionBillable
- M99.75 – Connective tissue and disc stenosis of intervertebral foramina of pelvic regionBillable
- M99.76 – Connective tissue and disc stenosis of intervertebral foramina of lower extremityBillable
- M99.78 – Connective tissue and disc stenosis of intervertebral foramina of rib cageBillable
- M99.79 – Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regionsBillable
Frequently asked questions
What is ICD-10 code M99.77?
M99.77 is the ICD-10-CM code for connective tissue and disc stenosis of intervertebral foramina of upper extremity, in the block M99 (Biomechanical lesions, not elsewhere classified (M99)).
Is M99.77 a billable code?
Yes. M99.77 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M99.77 belong to?
It belongs to category M99 – Biomechanical lesions, not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.