ICD-10 · PDGM grouping
N60 Benign mammary dysplasia
All 21 codes in the N60 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
21
Can lead a claim
14
Cannot lead a claim
7
What CMS assigns to N60
14 of the 21 codes group to MMTA - Gastrointestinal tract and Genitourinary system (9) and MMTA - Other (5); 7 are assigned no clinical group. None of the 21 is assigned a comorbidity subgroup. 14 of the 21 can lead a claim.
Every code in N60
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| N60.0 Solitary cyst of breast | ||||
| N60.01 | Solitary cyst of right breast | Can lead a claim | J | None |
| N60.02 | Solitary cyst of left breast | Can lead a claim | J | None |
| N60.09 | Solitary cyst of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.1 Diffuse cystic mastopathy | ||||
| N60.11 | Diffuse cystic mastopathy of right breast | Can lead a claim | J | None |
| N60.12 | Diffuse cystic mastopathy of left breast | Can lead a claim | J | None |
| N60.19 | Diffuse cystic mastopathy of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.2 Fibroadenosis of breast | ||||
| N60.21 | Fibroadenosis of right breast | Can lead a claim | A | None |
| N60.22 | Fibroadenosis of left breast | Can lead a claim | A | None |
| N60.29 | Fibroadenosis of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.3 Fibrosclerosis of breast | ||||
| N60.31 | Fibrosclerosis of right breast | Can lead a claim | A | None |
| N60.32 | Fibrosclerosis of left breast | Can lead a claim | A | None |
| N60.39 | Fibrosclerosis of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.4 Mammary duct ectasia | ||||
| N60.41 | Mammary duct ectasia of right breast | Can lead a claim | J | None |
| N60.42 | Mammary duct ectasia of left breast | Can lead a claim | A | None |
| N60.49 | Mammary duct ectasia of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.8 Other benign mammary dysplasias | ||||
| N60.81 | Other benign mammary dysplasias of right breast | Can lead a claim | J | None |
| N60.82 | Other benign mammary dysplasias of left breast | Can lead a claim | J | None |
| N60.89 | Other benign mammary dysplasias of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| N60.9 Unspecified benign mammary dysplasia | ||||
| N60.91 | Unspecified benign mammary dysplasia of right breast | Can lead a claim | J | None |
| N60.92 | Unspecified benign mammary dysplasia of left breast | Can lead a claim | J | None |
| N60.99 | Unspecified benign mammary dysplasia of unspecified breast | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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