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M99.78

✓ Billable

Connective tissue and disc stenosis of intervertebral foramina of rib cage

Diseases of the musculoskeletal system and connective tissue (M00-M99)

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✓ No additional coding notes for M99.78

Clinical Description

ICD-10-CM code M99.78 represents connective tissue and disc stenosis of intervertebral foramina of rib cage. This code falls under the Diseases of the musculoskeletal system and connective tissue (M00-M99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code M99.78?

ICD-10-CM code M99.78 is "Connective tissue and disc stenosis of intervertebral foramina of rib cage". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).

Is M99.78 a billable ICD-10 code?

Yes, M99.78 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Related Codes in M99.7

Other codes in the same category that may be relevant for differential coding:

M99.70Connective tissue and disc stenosis of intervertebral foramina of head regionM99.71Connective tissue and disc stenosis of intervertebral foramina of cervical regionM99.72Connective tissue and disc stenosis of intervertebral foramina of thoracic regionM99.73Connective tissue and disc stenosis of intervertebral foramina of lumbar regionM99.74Connective tissue and disc stenosis of intervertebral foramina of sacral regionM99.75Connective tissue and disc stenosis of intervertebral foramina of pelvic regionM99.76Connective tissue and disc stenosis of intervertebral foramina of lower extremityM99.77Connective tissue and disc stenosis of intervertebral foramina of upper extremityM99.79Connective tissue and disc stenosis of intervertebral foramina of abdomen and other regions

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Code Information

CodeM99.78
BillableYes
ParentM99.7
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)