ICD10BillableValid for clinical use

ICD-10 Code M66.159: Rupture of synovium, unspecified hip

M66.159 is a billable ICD-10 diagnosis code used to classify Rupture of synovium, unspecified hip in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

When is it used?

  • May be used when a clinician documents rupture of synovium, unspecified hip in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
13Diseases of the musculoskeletal system and connective tissue (M00-M99)
block
M60-M79Soft tissue disorders
block
M65-M67Disorders of synovium and tendon
category
M66Spontaneous rupture of synovium and tendon
category
M66.1Rupture of synovium
category
M66.15Rupture of synovium, hip
currentM66.15

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Orthopedic SpecialistRheumatologist

Coding guidelines

Common synonyms

Rupture of synovium, unspecified hipRupture of synovium

Frequently asked questions

Code details

CodeM66.159
SystemICD10
Display nameRupture of synovium, unspecified hip
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockDisorders of synovium and tendon

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code M66.159 for Rupture of synovium, unspecified hip | HealthAssure