M65.20

✓ Billable

Calcific tendinitis, unspecified site

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

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

M65.2

• tendinitis as classified in M75-M77
• calcified tendinitis of shoulder (M75.3)

M65

• chronic crepitant synovitis of hand and wrist (M70.0-)
• current injury - see injury of ligament or tendon by body region
• soft tissue disorders related to use, overuse and pressure (M70.-)

Clinical Description

ICD-10-CM code M65.20 represents calcific tendinitis, unspecified site. 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. Coders should note that M65.20 has 5 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code M65.20?

ICD-10-CM code M65.20 is "Calcific tendinitis, unspecified site". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).

Is M65.20 a billable ICD-10 code?

Yes, M65.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with M65.20?

M65.20 has 5 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in M65.2

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

M65.22Calcific tendinitis, upper arm M65.23Calcific tendinitis, forearm M65.24Calcific tendinitis, hand M65.25Calcific tendinitis, thigh M65.26Calcific tendinitis, lower leg M65.27Calcific tendinitis, ankle and foot M65.28Calcific tendinitis, other site M65.29Calcific tendinitis, multiple sites

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Code Information

CodeM65.20

BillableYes

ParentM65.2

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

Excludes15 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)