M1A.4
Non-Billable

Other secondary chronic gout

Non-Billable / Non-Specific Code

What is Other secondary chronic gout?

ICD-10-CM M1A.4 is the diagnosis code for Other secondary chronic gout. This code falls under the section "Inflammatory polyarthropathies" 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.

Coding Guidelines for M1A.4

Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.

ICD-10-CM Code Hierarchy

Understanding where M1A.4 sits in the ICD-10-CM classification helps ensure proper coding:

Sub-Codes 10 entries
M1A.40Other secondary chronic gout, unspecified siteBillableM1A.41Other secondary chronic gout, shoulderNon-BillableM1A.411Other secondary chronic gout, right shoulderBillableM1A.412Other secondary chronic gout, left shoulderBillableM1A.419Other secondary chronic gout, unspecified shoulderBillableM1A.42Other secondary chronic gout, elbowNon-BillableM1A.421Other secondary chronic gout, right elbowBillableM1A.422Other secondary chronic gout, left elbowBillableM1A.429Other secondary chronic gout, unspecified elbowBillableM1A.43Other secondary chronic gout, wristNon-BillableM1A.431Other secondary chronic gout, right wristBillableM1A.432Other secondary chronic gout, left wristBillableM1A.439Other secondary chronic gout, unspecified wristBillableM1A.44Other secondary chronic gout, handNon-BillableM1A.441Other secondary chronic gout, right handBillableM1A.442Other secondary chronic gout, left handBillableM1A.449Other secondary chronic gout, unspecified handBillableM1A.45Other secondary chronic gout, hipNon-BillableM1A.451Other secondary chronic gout, right hipBillableM1A.452Other secondary chronic gout, left hipBillableM1A.459Other secondary chronic gout, unspecified hipBillableM1A.46Other secondary chronic gout, kneeNon-BillableM1A.461Other secondary chronic gout, right kneeBillableM1A.462Other secondary chronic gout, left kneeBillableM1A.469Other secondary chronic gout, unspecified kneeBillableM1A.47Other secondary chronic gout, ankle and footNon-BillableM1A.471Other secondary chronic gout, right ankle and footBillableM1A.472Other secondary chronic gout, left ankle and footBillableM1A.479Other secondary chronic gout, unspecified ankle and footBillableM1A.48Other secondary chronic gout, vertebraeBillableM1A.49Other secondary chronic gout, multiple sitesBillable
Related Codes

Frequently Asked Questions

Is M1A.4 a billable ICD-10-CM code?

No, M1A.4 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.

What does M1A.4 mean?

M1A.4 is the ICD-10-CM diagnosis code for "Other secondary chronic gout". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of M1A.4?

The parent code of M1A.4 is M1A ("Chronic gout"). M1A.4 provides a more specific classification within this category.

What section is M1A.4 in?

M1A.4 is located in Section M05-M14 — "Inflammatory polyarthropathies" within Chapter 13 of the ICD-10-CM Tabular List.

What are the sub-codes of M1A.4?

M1A.4 has 10 sub-code(s) that provide more specific detail: M1A.40, M1A.41, M1A.42, M1A.43, M1A.44 and more.

When should I use M1A.4?

Use M1A.4 when the patients documented diagnosis matches "Other secondary chronic gout" 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 Other secondary chronic gout?

The ICD-10-CM code for Other secondary chronic gout is M1A.4.

Can M1A.4 be used for primary diagnosis?

No, M1A.4 is non-billable. Use a more specific sub-code for primary diagnosis billing.

What chapter is M1A.4 in?

M1A.4 is in Chapter 13 of the ICD-10-CM Tabular List.

Is M1A.4 valid for 2026?

Yes, M1A.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousM1A.39Chronic gout due to renal impairment, multiple sitesNext →M1A.40Other secondary chronic gout, unspecified site
Code Details
M1A.4
Other secondary chronic gout
Non-Billable / Non-Specific Code
13 — Diseases of the musculoskeletal system and connective tissue (M00-M99)
M05-M14 — Inflammatory polyarthropathies
2026 ICD-10-CM