ICD10BillableValid for clinical use

ICD-10 Code M61.122: Myositis ossificans progressiva, left upper arm

M61.122 is a billable ICD-10 diagnosis code used to classify Myositis ossificans progressiva, left upper arm 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 26 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 myositis ossificans progressiva, left upper arm 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
M60-M63Disorders of muscles
category
M61Calcification and ossification of muscle
category
M61.1Myositis ossificans progressiva
category
M61.12Myositis ossificans progressiva, upper arm
currentM61.12

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

Myositis ossificans progressiva, left upper arm

Frequently asked questions

Code details

CodeM61.122
SystemICD10
Display nameMyositis ossificans progressiva, left upper arm
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockDisorders of muscles

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 M61.122 for Myositis ossificans progressiva, left upper arm | HealthAssure