M84.3
Non-Billable

Stress fracture

Non-Billable / Non-Specific Code

What is Stress fracture?

ICD-10-CM M84.3 is the diagnosis code for Stress fracture. This code falls under the section "Disorders of bone density and structure" 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.

💡 Inclusions
⛔ Excludes1
â„šī¸ Excludes2

Coding Guidelines for M84.3

✅ This Code Includes

  • Fatigue fracture
  • March fracture
  • Stress fracture NOS
  • Stress reaction

⛔ Type 1 Excludes (Never code together)

The following conditions should never be coded at the same time as M84.3. They are mutually exclusive:

  • pathological fracture NOS (M84.4.-)
  • pathological fracture due to osteoporosis (M80.-)
  • traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)

â„šī¸ Type 2 Excludes (Code separately if applicable)

The following conditions are not included in M84.3. If the patient has both, code each condition separately:

  • personal history of (healed) stress (fatigue) fracture (Z87.312)
  • stress fracture of vertebra (M48.4-)

ICD-10-CM Code Hierarchy

Understanding where M84.3 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 9 entries
M84.30Stress fracture, unspecified siteBillableM84.31Stress fracture, shoulderNon-BillableM84.311Stress fracture, right shoulderBillableM84.312Stress fracture, left shoulderBillableM84.319Stress fracture, unspecified shoulderBillableM84.32Stress fracture, humerusNon-BillableM84.321Stress fracture, right humerusBillableM84.322Stress fracture, left humerusBillableM84.329Stress fracture, unspecified humerusBillableM84.33Stress fracture, ulna and radiusNon-BillableM84.331Stress fracture, right ulnaBillableM84.332Stress fracture, left ulnaBillableM84.333Stress fracture, right radiusBillableM84.334Stress fracture, left radiusBillableM84.339Stress fracture, unspecified ulna and radiusBillableM84.34Stress fracture, hand and fingersNon-BillableM84.341Stress fracture, right handBillableM84.342Stress fracture, left handBillableM84.343Stress fracture, unspecified handBillableM84.344Stress fracture, right finger(s)BillableM84.345Stress fracture, left finger(s)BillableM84.346Stress fracture, unspecified finger(s)BillableM84.35Stress fracture, pelvis and femurNon-BillableM84.350Stress fracture, pelvisBillableM84.351Stress fracture, right femurBillableM84.352Stress fracture, left femurBillableM84.353Stress fracture, unspecified femurBillableM84.359Stress fracture, hip, unspecifiedBillableM84.36Stress fracture, tibia and fibulaNon-BillableM84.361Stress fracture, right tibiaBillableM84.362Stress fracture, left tibiaBillableM84.363Stress fracture, right fibulaBillableM84.364Stress fracture, left fibulaBillableM84.369Stress fracture, unspecified tibia and fibulaBillableM84.37Stress fracture, ankle, foot and toesNon-BillableM84.371Stress fracture, right ankleBillableM84.372Stress fracture, left ankleBillableM84.373Stress fracture, unspecified ankleBillableM84.374Stress fracture, right footBillableM84.375Stress fracture, left footBillableM84.376Stress fracture, unspecified footBillableM84.377Stress fracture, right toe(s)BillableM84.378Stress fracture, left toe(s)BillableM84.379Stress fracture, unspecified toe(s)BillableM84.38Stress fracture, other siteBillable
Related Codes

Frequently Asked Questions

Is M84.3 a billable ICD-10-CM code?

No, M84.3 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M84.3 mean?

M84.3 is the ICD-10-CM diagnosis code for "Stress fracture". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of M84.3?

The parent code of M84.3 is M84 ("Disorder of continuity of bone"). M84.3 provides a more specific classification within this category.

What section is M84.3 in?

M84.3 is located in Section M80-M85 — "Disorders of bone density and structure" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M84.3?

M84.3 has 9 sub-code(s) that provide more specific detail: M84.30, M84.31, M84.32, M84.33, M84.34 and more.

When should I use M84.3?

Use M84.3 when the patients documented diagnosis matches "Stress fracture" 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 Stress fracture?

The ICD-10-CM code for Stress fracture is M84.3.

Can M84.3 be used for primary diagnosis?

No, M84.3 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M84.3 in?

M84.3 is in Chapter 13 of the ICD-10-CM Tabular List.

What conditions are excluded from M84.3?

Type 1 Excludes for M84.3 include: pathological fracture NOS (M84.4.-); pathological fracture due to osteoporosis (M80.-); traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-).

Is M84.3 valid for 2026?

Yes, M84.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM84Disorder of continuity of boneNext →M84.30Stress fracture, unspecified site
Code Details
M84.3
Stress fracture
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M80-M85 — Disorders of bone density and structure
2026 ICD-10-CM