N64.82 is the authoritative medical code for Hypoplasia of breast. This classification is used in medical billing and clinical recording to specify the clinical criteria for hypoplasia of breast (ICD-10-CM N64.82), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Hypoplasia of breast is a billable ICD-10-CM diagnosis code N64.82. Inclusion terms: Micromastia. Excludes1 (not coded here): congenital absence of breast Q83.0; hypoplasia of native breast in relation to reconstructed breast N65.1; disorders of breast associated with childbirth O91-O92. Excludes2 (not included here): mechanical complication of breast prosthesis and implant T85.4-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for N64.82 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- congenital absence of breast Q83.0
- hypoplasia of native breast in relation to reconstructed breast N65.1
- disorders of breast associated with childbirth O91-O92
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- mechanical complication of breast prosthesis and implant T85.4-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with N64.82?
Per Excludes1 instructions, N64.82 must not be reported with: congenital absence of breast (Q83.0); hypoplasia of native breast in relation to reconstructed breast (N65.1); disorders of breast associated with childbirth (O91-O92).
Can N64.82 be reported alongside related conditions?
Per Excludes2 instructions, N64.82 and the following may both be reported when both are present: mechanical complication of breast prosthesis and implant (T85.4-).
What conditions are included under N64.82?
Hypoplasia of breast includes: Micromastia.
Codes in This Family (15)
Official ICD-10-CM classifications in the same code family as N64.82, with their registry titles.
- N64 — Other disorders of breast
- N64.0 — Fissure and fistula of nipple
- N64.1 — Fat necrosis of breast
- N64.2 — Atrophy of breast
- N64.3 — Galactorrhea not associated with childbirth
- N64.4 — Mastodynia
- N64.5 — Other signs and symptoms in breast
- N64.51 — Induration of breast
- N64.52 — Nipple discharge
- N64.53 — Retraction of nipple
- N64.59 — Other signs and symptoms in breast
- N64.8 — Other specified disorders of breast
- N64.81 — Ptosis of breast
- N64.89 — Other specified disorders of breast
- N64.9 — Disorder of breast, unspecified
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Hypoplasia, hypoplastic, breast (areola)
- Micromastia
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: