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This group comprises general analgesics and antipyretics.
All salicylic acid derivatives except combinations with corticosteroids (M01B) or opioids (N02AJ) are classified in N02BA - Salicylic acid and derivatives, as it is difficult to differentiate between the use of salicylates in rheumatic conditions and other therapeutic uses of salicylates.
All plain ibuprofen preparations are classified in M01A, even if they are only intended for use as pain relief.
There are a number of combined preparations, which contain analgesics and psycholeptics. These are classified in N02, as pain relief must be regarded as the main indication. Analgesics used for specific indications are classified in the respective ATC groups. E.g.:
A03D/
A03EA- Antispasmodic/psycholeptics/analgesic combinations
M01 - Antiinflammatory and antirheumatic products
M02A - Topical products for joint and muscular pain
M03 - Muscle relaxants
See comments to these groups.
Lidocaine indicated for postherpetic pain is classified in N01BB.

See general considerations under N02.
Combinations with opioids should be classified in N02AJ - Opioids in combination with non-opioid analgesics. Combinations with codeine, non-opioid analgesics and psycholeptics are classified in N02AA79.
Combinations with opioids and antispasmodics are classified in
N02AG - Opioids in combination with antispasmodics.
Combinations with muscle relaxants are classified in M03B.
Combined preparations which contain more than one analgesic, should be classified by using the following ranking:
1. Phenacetin
2. Bucetin
3. Dipyrocetyl
4. Paracetamol
5. Acetylsalicylic acid
6. Phenazone
7. Salicylamide
8. Propyphenazone
This means that a product containing paracetamol and phenazone should be classified in N02BE51 - paracetamol, combinations excl. psycholeptics and not in N02BB51 - phenazone, combinations excl. psycholeptics.
Dextropropoxyphene plain, and in combination with other analgesics, is classified in N02AC.
Cold preparations with therapeutic levels of analgesics are classified in this group at separate 5th levels by using the 50-series.
Preparations are subdivided on 4th levels according to chemical structure.
Combinations with ascorbic acid (i.e. 50 mg or more per unit dose) are classified at separate 5th levels using the corresponding 50-series. Products containing less than 50 mg per unit dose are classified at the plain level of the analgesic component.

N02BA Salicylic acid and derivatives

All salicylic acid derivatives including some commonly regarded as non-steroid antiinflammatory drugs, e.g. diflunisal, are classified in this group. See comment under N02 - Analgesics.
Salicylic acid derivatives in combination with corticosteroids are classified in M01B. Acetylsalicylic acid preparations specifically intended for use as antithrombotic agents are classified in B01AC.
Combinations of sodium salicylate and methenamine are classified in G04BX.
Lysine acetylsalicylate is classified at the same 5th level as acetylsalicylic acid.
Combinations with antiemetics are classified here.

N02BB Pyrazolones
N02BE Anilides

Propacetamol, a prodrug of paracetamol is classified at a separate ATC 5th level in this group.
Benorilate, which is an ester of acetylsalicylic acid and paracetamol, is classified in N02BA.
Combinations of paracetamol and e.g. ibuprofen are classified in N02BE51.
Paracetamol in combination with orphenadrine (citrate) is classified in M03BC.

N02BF Gabapentinoids
N02BG Other analgesics and antipyretics

This group comprises analgesics, which cannot be classified in the preceding groups.