M91
Non-Billable

Juvenile osteochondrosis of hip and pelvis

Non-Billable / Non-Specific Code

What is Juvenile osteochondrosis of hip and pelvis?

ICD-10-CM M91 is the diagnosis code for Juvenile osteochondrosis of hip and pelvis. This code falls under the section "Chondropathies" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

â›” Excludes1

Coding Guidelines for M91

â›” Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as M91. They are mutually exclusive:

  • slipped upper femoral epiphysis (nontraumatic) (M93.0-)

ICD-10-CM Code Hierarchy

Understanding where M91 sits in the ICD-10-CM classification helps ensure proper coding:

Current CodeM91 — Juvenile osteochondrosis of hip and pelvis
Sub-Codes 7 entries
M91.0Juvenile osteochondrosis of pelvisBillableM91.1Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes]Non-BillableM91.10Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], unspecified legBillableM91.11Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], right legBillableM91.12Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], left legBillableM91.2Coxa planaNon-BillableM91.20Coxa plana, unspecified hipBillableM91.21Coxa plana, right hipBillableM91.22Coxa plana, left hipBillableM91.3PseudocoxalgiaNon-BillableM91.30Pseudocoxalgia, unspecified hipBillableM91.31Pseudocoxalgia, right hipBillableM91.32Pseudocoxalgia, left hipBillableM91.4Coxa magnaNon-BillableM91.40Coxa magna, unspecified hipBillableM91.41Coxa magna, right hipBillableM91.42Coxa magna, left hipBillableM91.8Other juvenile osteochondrosis of hip and pelvisNon-BillableM91.80Other juvenile osteochondrosis of hip and pelvis, unspecified legBillableM91.81Other juvenile osteochondrosis of hip and pelvis, right legBillableM91.82Other juvenile osteochondrosis of hip and pelvis, left legBillableM91.9Juvenile osteochondrosis of hip and pelvis, unspecifiedNon-BillableM91.90Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified legBillableM91.91Juvenile osteochondrosis of hip and pelvis, unspecified, right legBillableM91.92Juvenile osteochondrosis of hip and pelvis, unspecified, left legBillable
Related Codes

Frequently Asked Questions

Is M91 a billable ICD-10-CM code?

No, M91 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M91 mean?

M91 is the ICD-10-CM diagnosis code for "Juvenile osteochondrosis of hip and pelvis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What section is M91 in?

M91 is located in Section M91-M94 — "Chondropathies" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M91?

M91 has 7 sub-code(s) that provide more specific detail: M91.0, M91.1, M91.2, M91.3, M91.4 and more.

When should I use M91?

Use M91 when the patients documented diagnosis matches "Juvenile osteochondrosis of hip and pelvis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Juvenile osteochondrosis of hip and pelvis?

The ICD-10-CM code for Juvenile osteochondrosis of hip and pelvis is M91.

Can M91 be used for primary diagnosis?

No, M91 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M91 in?

M91 is in Chapter 13 of the ICD-10-CM Tabular List.

What conditions are excluded from M91?

Type 1 Excludes for M91 include: slipped upper femoral epiphysis (nontraumatic) (M93.0-).

Is M91 valid for 2026?

Yes, M91 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM90.89Osteopathy in diseases classified elsewhere, multiple sitesNext →M91.0Juvenile osteochondrosis of pelvis
Code Details
M91
Juvenile osteochondrosis of hip and pelvis
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M91-M94 — Chondropathies
2026 ICD-10-CM